All Transactions
Transactions listed are from November 1 of previous year to April 1 of the following year.
- November 2, 1955
The Cleveland Indians released Ferris Fain.
- November 7, 1955
The Philadelphia Phillies signed Wally Westlake as a free agent.
- November 8, 1955
The Boston Red Sox traded Al Curtis (minors), Dick Brodowski, Neil Chrisley, Tex Clevenger and Karl Olson to the Washington Nationals for Bob Porterfield, Johnny Schmitz, Tom Umphlett and Mickey Vernon.
- November 14, 1955
The New York Giants signed Felipe Alou as an amateur free agent.
- November 27, 1955
The Baltimore Orioles drafted Bob Boyd from the St. Louis Cardinals in the 1955 rule 5 draft.
The Washington Nationals drafted Connie Grob from the Brooklyn Dodgers in the 1955 rule 5 draft.
The Kansas City Athletics drafted Troy Herriage from Oakland (PCL) in the 1955 rule 5 draft.
The Chicago Cubs drafted Monte Irvin from the New York Giants in the 1955 rule 5 draft.
The Pittsburgh Pirates drafted Jack McMahan from the New York Yankees in the 1955 rule 5 draft.
The St. Louis Cardinals drafted Billy Muffett from the Chicago Cubs in the 1955 rule 5 draft.
The Detroit Tigers drafted Joe Presko from the St. Louis Cardinals in the 1955 rule 5 draft.
The New York Giants drafted Steve Ridzik from Seattle (PCL) in the 1955 rule 5 draft.
The Milwaukee Braves drafted Lou Sleater from the Kansas City Athletics in the 1955 rule 5 draft.
The Chicago Cubs drafted Vito Valentinetti from Toronto (International) in the 1955 rule 5 draft.
The Cleveland Indians drafted Jim Dunn from the Pittsburgh Pirates in the 1955 minor league draft.
The Chicago Cubs drafted George Freese from the Pittsburgh Pirates in the 1955 minor league draft.
The Milwaukee Braves drafted Gabe Gabler from the Brooklyn Dodgers in the 1955 minor league draft.
The Chicago Cubs drafted Johnny Goryl from the Baltimore Orioles in the 1955 minor league draft.
The New York Yankees drafted Milt Graff from the Pittsburgh Pirates in the 1955 minor league draft.
Seattle (PCL) drafted Ken Landenberger from the Chicago White Sox in the 1955 minor league draft.
The St. Louis Cardinals drafted Ed Mayer from the Boston Red Sox in the 1955 minor league draft.
The New York Giants drafted Bobby Prescott from the Pittsburgh Pirates in the 1955 minor league draft.
The New York Giants drafted Freddy Rodríguez from the Milwaukee Braves in the 1955 minor league draft.
The Brooklyn Dodgers drafted Ken Rowe from the Detroit Tigers in the 1955 minor league draft.
The New York Giants drafted Dick Strahs from the Chicago White Sox in the 1955 minor league draft.
The New York Giants drafted Bert Thiel from the Milwaukee Braves in the 1955 minor league draft.
The New York Giants drafted Valmy Thomas from the Pittsburgh Pirates in the 1955 minor league draft.
The Detroit Tigers drafted Hal Woodeshick from the New York Giants in the 1955 minor league draft.
- November 28, 1955
The Chicago Cubs traded Hal Jeffcoat to the Cincinnati Redlegs for Hobie Landrith.
- November 30, 1955
The Chicago White Sox traded Virgil Trucks to the Detroit Tigers for Bubba Phillips.
- December, 1955
The Boston Red Sox signed Jay Ritchie as an amateur free agent.
The Milwaukee Braves traded a player to be named later to the New York Giants for Red Murff. The Milwaukee Braves sent Murray Wall (December, 1955) to the New York Giants to complete the trade.
- December 2, 1955
Seattle (PCL) purchased Jim Robertson from the Kansas City Athletics.
- December 4, 1955
The St. Louis Cardinals selected Ellis Kinder off waivers from the Boston Red Sox.
- December 9, 1955
The Philadelphia Phillies purchased Frank Baumholtz from the Chicago Cubs.
The Brooklyn Dodgers traded Don Hoak, Russ Meyer and Walt Moryn to the Chicago Cubs for Don Elston and Randy Jackson.
- December 14, 1955
The Chicago Cubs released Walker Cooper.
- December 15, 1955
The St. Louis Cardinals signed Walker Cooper as a free agent.
- December 21, 1955
The Brooklyn Dodgers purchased Jack Littrell from the Kansas City Athletics.
- December 30, 1955
The Brooklyn Dodgers traded Pete Wojey to the Detroit Tigers for Leo Cristante and cash.
- Before 1956 Season
The Cleveland Indians signed Bob Allen as an amateur free agent.
The Cincinnati Redlegs signed Rogelio Álvarez as an amateur free agent.
The Cincinnati Redlegs signed Joe Azcue as an amateur free agent.
The Cincinnati Redlegs signed Jim Bailey as an amateur free agent.
The Pittsburgh Pirates signed Ed Bauta as an amateur free agent.
The Pittsburgh Pirates signed Bo Belinsky as an amateur free agent.
The New York Giants signed Ernie Bowman as an amateur free agent.
The Chicago White Sox signed Alan Brice as an amateur free agent.
The Chicago White Sox signed Cam Carreon as an amateur free agent.
The Cincinnati Redlegs signed Elio Chacón as an amateur free agent.
The St. Louis Cardinals signed Nelson Chittum as an amateur free agent.
The St. Louis Cardinals signed Don Choate as an amateur free agent.
The Washington Nationals signed Bert Cueto as an amateur free agent.
The Brooklyn Dodgers signed Tommy Davis as an amateur free agent.
The Kansas City Athletics signed Ed Donnelly as an amateur free agent.
The St. Louis Cardinals signed Jim Donohue as an amateur free agent.
The Cincinnati Redlegs signed Curt Flood as an amateur free agent.
The Cincinnati Redlegs signed Joe Gaines as an amateur free agent.
The Brooklyn Dodgers signed Bob Giallombardo as an amateur free agent.
The Detroit Tigers signed Fred Gladding as an amateur free agent.
The Baltimore Orioles signed Ron Hansen as an amateur free agent.
The Philadelphia Phillies signed Tim Harkness as an amateur free agent.
The Washington Nationals signed Jim Heise as an amateur free agent.
The St. Louis Cardinals signed Jim Hickman as an amateur free agent.
The Baltimore Orioles signed Chuck Hinton as an amateur free agent.
The Chicago White Sox signed Ed Hobaugh as an amateur free agent.
The Pittsburgh Pirates signed Julián Javier as an amateur free agent.
The New York Yankees signed Deron Johnson as an amateur free agent.
The Kansas City Athletics signed Hal Jones as an amateur free agent.
The Milwaukee Braves signed Bobby Knoop as an amateur free agent.
The Detroit Tigers signed Howie Koplitz as an amateur free agent.
The Detroit Tigers signed Frank Kostro as an amateur free agent.
The Pittsburgh Pirates signed Bob Lee as an amateur free agent.
The Milwaukee Braves signed Em Lindbeck as an amateur free agent.
The Kansas City Athletics signed Gordon MacKenzie as an amateur free agent.
The Washington Nationals signed Héctor Maestri as an amateur free agent.
The Chicago White Sox signed J.C. Martin as an amateur free agent.
The Washington Nationals signed Tom McAvoy as an amateur free agent.
The Brooklyn Dodgers signed Don Miles as an amateur free agent.
The Chicago White Sox signed Don Mincher as an amateur free agent.
The New York Yankees signed Phil Mudrock as an amateur free agent.
The St. Louis Cardinals signed Mel Nelson as an amateur free agent.
The St. Louis Cardinals signed Gene Oliver as an amateur free agent.
The Pittsburgh Pirates signed George Perez as an amateur free agent.
The Cleveland Indians signed Jim Perry as an amateur free agent.
The Chicago White Sox signed Gary Peters as an amateur free agent.
The Cincinnati Redlegs signed Vada Pinson as an amateur free agent.
The Milwaukee Braves signed Juan Pizarro as an amateur free agent.
The Detroit Tigers signed Phil Regan as an amateur free agent.
The New York Yankees signed Hal Reniff as an amateur free agent.
The Detroit Tigers signed Buck Rodgers as an amateur free agent.
The Cincinnati Redlegs signed Cookie Rojas as an amateur free agent.
The Chicago Cubs signed Joe Schaffernoth as an amateur free agent.
The Detroit Tigers signed Gordon Seyfried as an amateur free agent.
The Baltimore Orioles signed Barry Shetrone as an amateur free agent.
The Brooklyn Dodgers signed Nate Smith as an amateur free agent.
The Boston Red Sox signed Tracy Stallard as an amateur free agent.
The Baltimore Orioles signed Wes Stock as an amateur free agent.
The Pittsburgh Pirates signed Moose Stubing as an amateur free agent.
The Cleveland Indians signed Ron Taylor as an amateur free agent.
The Cleveland Indians signed Carl Thomas as an amateur free agent.
The Cleveland Indians signed Dave Tyriver as an amateur free agent.
The Milwaukee Braves signed Bob Uecker as an amateur free agent.
The Baltimore Orioles signed Fred Valentine as an amateur free agent.
The New York Yankees signed Jay Ward as an amateur free agent.
The Pittsburgh Pirates signed Fred Whitfield as an amateur free agent.
The Chicago Cubs signed Billy Williams as an amateur free agent.
The Kansas City Athletics signed Don Williams as an amateur free agent.
The New York Giants signed Neil Wilson as an amateur free agent.
The Milwaukee Braves signed Corky Withrow as an amateur free agent.
The Milwaukee Braves signed Sammy Taylor as a free agent.
The Baltimore Orioles obtained George Bamberger from Oakland (PCL) as part of a minor league working agreement.
The Cincinnati Redlegs obtained Larry Jansen from Seattle (PCL) as part of a minor league working agreement.
The Cincinnati Redlegs obtained Bill Kennedy from Seattle (PCL) as part of a minor league working agreement.
The Brooklyn Dodgers obtained Ed Mickelson from Portland (PCL) as part of a minor league working agreement.
The New York Yankees obtained Marshall Renfroe from St Petersburg (Florida State) as part of a minor league working agreement.
The Cincinnati Redlegs obtained Art Schult from Seattle (PCL) as part of a minor league working agreement.
The Boston Red Sox obtained Gordie Windhorn from Oklahoma City (Texas) as part of a minor league working agreement.
The New York Giants purchased Ernie Broglio from Vancouver (PCL).
The Cincinnati Redlegs purchased Joe Taylor from the Kansas City Athletics.
The Chicago Cubs sent Bubba Church (1956) and Joe Stanka (1956) to Sacramento (PCL) to complete the trade.
Chet Boak sent from Salem (Appalachian) to the Kansas City Athletics in an unknown transaction.
Bud Byerly sent from the New York Giants to the Washington Nationals in an unknown transaction.
Chuck Cottier sent from New Iberia (Evangeline) to the Milwaukee Braves in an unknown transaction.
Bill Kunkel sent from the Boston Red Sox to the Brooklyn Dodgers in an unknown transaction.
Jim McDonald sent from the New York Yankees to the Baltimore Orioles in an unknown transaction.
Felipe Montemayor sent from the Pittsburgh Pirates to Mexico City Tigers (Mexican) in an unknown transaction.
Diomedes Olivo sent from the Cincinnati Redlegs to Mexico City Reds (Mexican) in an unknown transaction.
Orlando Peña sent from Daytona Beach (Florida State) to the Cincinnati Redlegs in an unknown transaction.
Duane Pillette sent from the Baltimore Orioles to Buffalo (International) in an unknown transaction.
John Weekly sent from Salem (Northwest) to the New York Giants in an unknown transaction.
Elder White sent from the Cleveland Indians to the Pittsburgh Pirates in an unknown transaction.
Roy Wright sent from the St. Louis Cardinals to ??? in an unknown transaction.
- January 18, 1956
The Cincinnati Redlegs released Sam Mele.
- January 19, 1956
The Washington Nationals released Spec Shea.
- January 25, 1956
Toronto (International) purchased Don Johnson from the Baltimore Orioles. (Date given is approximate. Exact date is uncertain.)
- January 31, 1956
The Cincinnati Redlegs traded Jackie Collum to the St. Louis Cardinals for Brooks Lawrence and Sonny Senerchia.
- February 8, 1956
The Boston Red Sox purchased Pumpsie Green from Stockton (California).
The New York Yankees traded a player to be named later, Lou Berberet, Herb Plews, Dick Tettelbach and Bob Wiesler to the Washington Nationals for Bobby Kline and Mickey McDermott. The New York Yankees sent Whitey Herzog (April 2, 1956) to the Washington Nationals to complete the trade.
- February 16, 1956
- February 22, 1956
The Washington Nationals released Bruce Edwards.
- March, 1956
The Pittsburgh Pirates released Fred Whitfield. (Date given is approximate. Exact date is uncertain.)
- March 1, 1956
The Cleveland Indians purchased Ted Beard from San Francisco (PCL).
- March 2, 1956
The Kansas City Athletics purchased Tommy Lasorda from the Brooklyn Dodgers.
- March 5, 1956
The New York Giants purchased Jim Mangan from the Pittsburgh Pirates.
- March 12, 1956
The Boston Red Sox released Dizzy Trout.
- March 24, 1956
The Cleveland Indians signed Sam Mele as a free agent.
- March 30, 1956
The Chicago Cubs traded Hank Sauer to the St. Louis Cardinals for Pete Whisenant.
- April, 1956
Indianapolis (Negro American) sent John Wyatt to the Milwaukee Braves as part of a conditional deal.
The Detroit Tigers purchased Don Bradey from the Chicago White Sox.
- April 1, 1956
Jim Pearce assigned by the Cincinnati Redlegs to the St. Louis Cardinals. (Date given is approximate. Exact date is uncertain.)
- April 5, 1956
The Baltimore Orioles selected Babe Birrer off waivers from the Detroit Tigers.
- April 9, 1956
The Detroit Tigers released Joe Coleman.
The Cincinnati Redlegs traded a player to be named later and Bob Hazle to the Milwaukee Braves for George Crowe. The Cincinnati Redlegs sent Corky Valentine (May 10, 1956) to the Milwaukee Braves to complete the trade.
- April 10, 1956
The St. Louis Cardinals purchased Pidge Browne from the Chicago Cubs.
The Cincinnati Redlegs selected Frank Smith off waivers from the St. Louis Cardinals.
- April 16, 1956
The Chicago White Sox signed Howie Pollet as a free agent.
The Kansas City Athletics purchased Johnny Groth from the Washington Nationals.
Toronto (International) purchased Carl Sawatski from the Chicago White Sox.
The Brooklyn Dodgers traded Tim Thompson to the Kansas City Athletics for Tom Saffell, Lee Wheat and cash.
- April 17, 1956
- April 18, 1956
Sacramento (PCL) purchased Cloyd Boyer from the Kansas City Athletics.
Toronto (International) purchased Lynn Lovenguth from the Philadelphia Phillies.
The Philadelphia Phillies released Gus Niarhos.
- April 20, 1956
Atlanta (Southern Association) purchased Charlie Bicknell from the Milwaukee Braves. (Date given is approximate. Exact date is uncertain.)
- April 21, 1956
The Baltimore Orioles purchased Billy Gardner from the New York Giants for $20,000.
- April 27, 1956
The Cleveland Indians purchased Johnny Gray from the Kansas City Athletics.
The Pittsburgh Pirates released Paul Martin.
- April 30, 1956
The Washington Nationals released Walt Masterson.
- May, 1956
The Milwaukee Braves returned John Wyatt to Indianapolis (Negro American) as part of a conditional deal.
- May 1, 1956
The Cincinnati Redlegs traded Milt Smith to the St. Louis Cardinals for Paul LaPalme.
- May 4, 1956
The Chicago White Sox released Don Wheeler.
- May 7, 1956
The Pittsburgh Pirates traded Max Surkont to the St. Louis Cardinals for Luis Arroyo.
- May 10, 1956
The Chicago Cubs purchased Gabe Gabler from the Milwaukee Braves. (Date given is approximate. Exact date is uncertain.)
- May 11, 1956
The Detroit Tigers signed Walt Masterson as a free agent.
The Cincinnati Redlegs purchased Jim Dyck from the Baltimore Orioles.
The St. Louis Cardinals purchased Grady Hatton from the Boston Red Sox.
The Philadelphia Phillies traded Murry Dickson and Herm Wehmeier to the St. Louis Cardinals for Ben Flowers, Harvey Haddix and Stu Miller.
- May 13, 1956
The Chicago Cubs sent Gabe Gabler to the Pittsburgh Pirates as part of a conditional deal.
The Baltimore Orioles traded Dave Pope to the Cleveland Indians for Hoot Evers.
- May 14, 1956
The Philadelphia Phillies returned Bob Ross to the Washington Nationals as part of a conditional deal.
The Baltimore Orioles purchased Billy Loes from the Brooklyn Dodgers for $20,000.
The Baltimore Orioles purchased Johnny Schmitz from the Boston Red Sox.
The Philadelphia Phillies traded Bobby Morgan to the St. Louis Cardinals for Solly Hemus.
- May 15, 1956
The Chicago Cubs purchased Jim Hughes from the Brooklyn Dodgers.
The Brooklyn Dodgers purchased Sal Maglie from the Cleveland Indians.
The Cleveland Indians traded Hank Foiles to the Pittsburgh Pirates for Preston Ward.
The Chicago White Sox traded Jim Brideweser, Harry Byrd and Bob Kennedy to the Detroit Tigers for Jim Delsing and Fred Hatfield.
- May 16, 1956
San Diego (PCL) purchased Joe Astroth from the Kansas City Athletics.
The Kansas City Athletics purchased José Santiago from the Cleveland Indians.
The Cincinnati Redlegs traded Chuck Harmon to the St. Louis Cardinals for Joe Frazier and Alex Grammas.
Marion Fricano sent from Toronto (International) to the Chicago White Sox in an unknown transaction.
- May 17, 1956
The Pittsburgh Pirates traded Bobby Del Greco and Dick Littlefield to the St. Louis Cardinals for Bill Virdon.
- May 18, 1956
The New York Yankees released Jim Konstanty.
The Philadelphia Phillies released Wally Westlake.
- May 19, 1956
The Cincinnati Redlegs released Al Silvera.
- May 21, 1956
The Kansas City Athletics released Elmer Valo.
The Baltimore Orioles traded Dave Philley and Jim Wilson to the Chicago White Sox for Mike Fornieles, Connie Johnson, George Kell and Bob Nieman.
- May 22, 1956
The Philadelphia Phillies signed Elmer Valo as a free agent.
- May 28, 1956
The Baltimore Orioles released Bobby Adams.
The Pittsburgh Pirates traded Toby Atwell to the St. Louis Cardinals for a player to be named later and cash. The St. Louis Cardinals sent Dick Rand (October 12, 1956) to the Pittsburgh Pirates to complete the trade.
The Chicago White Sox selected Gerry Staley off waivers from the New York Yankees.
- June, 1956
Ed Donnelly sent from the Kansas City Athletics to the Chicago Cubs in an unknown transaction. (Date given is approximate. Exact date is uncertain.)
- June 1, 1956
Seattle (PCL) released Jim Robertson.
- June 4, 1956
The Baltimore Orioles signed Bobby Adams as a free agent.
The St. Louis Cardinals signed Jim Konstanty as a free agent.
The Boston Red Sox purchased Max Surkont from the St. Louis Cardinals.
- June 6, 1956
The Chicago Cubs signed Jim Brewer as an amateur free agent.
- June 9, 1956
The Pittsburgh Pirates released Bo Belinsky. (Date given is approximate. Exact date is uncertain.)
- June 14, 1956
The Detroit Tigers signed Jim Robertson as a free agent.
The New York Giants traded Al Dark, Ray Katt, Don Liddle, Whitey Lockman and cash to the St. Louis Cardinals for players to be named later, Jackie Brandt, Dick Littlefield, Bill Sarni and Red Schoendienst. The St. Louis Cardinals sent Bob Stephenson (June 17, 1956) and Gordon Jones (October 1, 1956) to the New York Giants to complete the trade.
The Kansas City Athletics traded Moe Burtschy, Bill Renna and cash to the New York Yankees for Eddie Robinson and Lou Skizas.
- June 15, 1956
The New York Yankees signed Bud Zipfel as an amateur free agent.
- June 16, 1956
The Philadelphia Phillies signed Al Kenders as an amateur free agent.
- June 21, 1956
The St. Louis Cardinals signed Chris Cannizzaro as an amateur free agent.
The Washington Nationals signed Jimmie Hall as an amateur free agent.
- June 22, 1956
The Milwaukee Braves released John Edelman.
The Chicago White Sox selected Paul LaPalme off waivers from the Cincinnati Redlegs.
- June 23, 1956
The Kansas City Athletics traded Spook Jacobs to the Pittsburgh Pirates for Jack McMahan and Curt Roberts.
- June 24, 1956
The Pittsburgh Pirates returned Gabe Gabler to the Chicago Cubs as part of a conditional deal.
- June 25, 1956
The Boston Red Sox purchased Fritz Dorish from the Baltimore Orioles.
The Baltimore Orioles selected Dick Williams off waivers from the Brooklyn Dodgers.
- June 26, 1956
The Detroit Tigers signed Kent Hadley as an amateur free agent.
The Philadelphia Phillies signed Jack Lamabe as an amateur free agent.
The Baltimore Orioles purchased Joe Frazier from the Cincinnati Redlegs.
- June 27, 1956
The Detroit Tigers signed Don Lee as an amateur free agent.
- June 29, 1956
The Philadelphia Phillies signed Art Mahaffey as an amateur free agent.
The Baltimore Orioles signed Ron Moeller as an amateur free agent.
- June 30, 1956
The Chicago Cubs signed Jack Curtis as an amateur free agent.
The Chicago Cubs signed Jerry Kindall as an amateur free agent (bonus baby).
- July, 1956
The Kansas City Athletics purchased John Wyatt from El Paso (Southwestern). (Date given is approximate. Exact date is uncertain.)
- July 3, 1956
The Philadelphia Phillies traded Jim Command to the St. Louis Cardinals for Toby Atwell.
- July 4, 1956
The Brooklyn Dodgers traded Ray Shearer to the Milwaukee Braves for Jim Frey (minors).
- July 7, 1956
The Philadelphia Phillies traded Moose Johnson (minors), Mel Clark, Thornton Kipper and cash to the Washington Nationals for Tony Ponce (minors), Dario Rubinstein (minors), Pompeyo Davalillo and Roy Hawes.
- July 8, 1956
The Chicago White Sox purchased Jim McDonald from the Baltimore Orioles.
- July 11, 1956
The Kansas City Athletics traded Tommy Lasorda to the New York Yankees for Wally Burnette.
The Chicago White Sox selected Ellis Kinder off waivers from the St. Louis Cardinals.
- July 13, 1956
The Chicago White Sox released Howie Pollet.
The Baltimore Orioles selected Morrie Martin off waivers from the Chicago White Sox.
- July 15, 1956
The Pittsburgh Pirates signed Howie Pollet as a free agent.
- July 17, 1956
The Milwaukee Braves purchased Toby Atwell from the Philadelphia Phillies.
The Baltimore Orioles released Bobby Adams.
- July 18, 1956
The Cincinnati Redlegs signed Bruce Edwards as a free agent.
- July 19, 1956
The Philadelphia Phillies signed Bob Lipski as an amateur free agent.
- July 20, 1956
The Brooklyn Dodgers signed Bob Aspromonte as an amateur free agent.
- July 22, 1956
The Chicago Cubs signed Moe Drabowsky as an amateur free agent (bonus baby).
- July 23, 1956
Miami (International) purchased Ron Mrozinski from the Philadelphia Phillies. (Date given is approximate. Exact date is uncertain.)
- July 24, 1956
The Baltimore Orioles purchased Sandy Consuegra from the Chicago White Sox.
- July 27, 1956
The Chicago Cubs released Clyde McCullough.
- July 28, 1956
The Milwaukee Braves purchased Bob Ross from the Washington Nationals for $30,000.
- July 29, 1956
The Brooklyn Dodgers purchased Dale Mitchell from the Cleveland Indians.
- July 30, 1956
The St. Louis Cardinals selected Rocky Nelson off waivers from the Brooklyn Dodgers.
- August, 1956
Roy Hawes sent from the Philadelphia Phillies to the Detroit Tigers in an unknown transaction. (Date given is approximate. Exact date is uncertain.)
- August 1, 1956
The Baltimore Orioles purchased Grady Hatton from the St. Louis Cardinals.
- August 6, 1956
The Baltimore Orioles released Hoot Evers.
- August 13, 1956
The Cincinnati Redlegs signed Don Pavletich as an amateur free agent (bonus baby).
- August 15, 1956
- August 17, 1956
The Baltimore Orioles traded Hal Smith to the Kansas City Athletics for Joe Ginsberg.
- August 20, 1956
The New York Giants purchased Max Surkont from the Boston Red Sox.
- August 22, 1956
The New York Yankees selected George Wilson off waivers from the New York Giants.
- August 25, 1956
The New York Yankees released Phil Rizzuto.
The New York Yankees selected Enos Slaughter off waivers from the Kansas City Athletics.
- August 31, 1956
The New York Giants signed Mike McCormick as an amateur free agent (bonus baby).
- September, 1956
The New York Giants signed Roy Wright as a free agent.
- September 1, 1956
The Baltimore Orioles signed Hoot Evers as a free agent.
The Cincinnati Redlegs selected Russ Meyer off waivers from the Chicago Cubs.
- September 2, 1956
The Baltimore Orioles signed George Werley as an amateur free agent.
- September 3, 1956
The Brooklyn Dodgers signed Ralph Branca as a free agent.
- September 4, 1956
The Milwaukee Braves signed Ken MacKenzie as an amateur free agent.
- September 9, 1956
The Boston Red Sox purchased Gene Mauch from the Chicago Cubs.
The Boston Red Sox purchased Rudy Minarcin from the Cincinnati Redlegs.
- September 12, 1956
The Chicago White Sox signed Jim Derrington as an amateur free agent (bonus baby).
- September 17, 1956
The Baltimore Orioles traded a player to be named later and Jim Pisoni to the Kansas City Athletics for players to be named later. The Baltimore Orioles sent Ryne Duren (September 21, 1956) to the Kansas City Athletics to complete the trade. The Kansas City Athletics sent Art Ceccarelli (October 11, 1956) and Al Pilarcik (October 11, 1956) to the Baltimore Orioles to complete the trade.
The Chicago White Sox selected Dick Marlowe off waivers from the Detroit Tigers.
- October, 1956
The New York Yankees purchased Bob Oldis from the Washington Nationals.
- October 1, 1956
The Chicago Cubs released Paul Minner.
The St. Louis Cardinals sent Rocky Nelson (March 21, 1957) to Toronto (International) to complete the trade. (Date given is approximate. Exact date is uncertain.)
- October 2, 1956
- October 8, 1956
The St. Louis Cardinals released Walker Cooper.
The St. Louis Cardinals released Jim Konstanty.
The Pittsburgh Pirates released Howie Pollet.
The Philadelphia Phillies released Andy Seminick.
- October 9, 1956
The Boston Red Sox released Fritz Dorish.
- October 11, 1956
The New York Giants traded Jim Hearn to the Philadelphia Phillies for Stu Miller.
- October 12, 1956
San Francisco (Pacific Coast) purchased Duane Pillette from the Philadelphia Phillies.
- October 14, 1956
The Brooklyn Dodgers purchased Connie Grob from the Washington Nationals.
The Cincinnati Redlegs purchased Elmer Singleton from Seattle (PCL).
- October 15, 1956
The Philadelphia Phillies sent Ben Flowers to the Kansas City Athletics as part of a conditional deal.
Jack Lamabe of the Philadelphia Phillies granted free agency.
The Kansas City Athletics purchased Bob Cerv from the New York Yankees.
The Baltimore Orioles purchased Buddy Peterson from the Chicago White Sox. (Date given is approximate. Exact date is uncertain.)
- October 16, 1956
The St. Louis Cardinals released Hank Sauer.
- October 17, 1956
The Pittsburgh Pirates released Red Munger.
- October 18, 1956
The Baltimore Orioles released Hoot Evers.
The Baltimore Orioles released Johnny Schmitz.
- October 22, 1956
The Baltimore Orioles released Grady Hatton.
The Detroit Tigers released Walt Masterson.
- October 26, 1956
The New York Giants signed Hank Sauer as a free agent.
- October 31, 1956
The Cincinnati Redlegs signed Bobby Henrich as an amateur free agent (bonus baby).
- November 13, 1956
The Chicago Cubs traded Warren Hacker, Don Hoak and Pete Whisenant to the Cincinnati Redlegs for Ray Jablonski and Elmer Singleton.
- November 19, 1956
The Philadelphia Phillies traded Del Ennis to the St. Louis Cardinals for Bobby Morgan and Rip Repulski.
- December 3, 1956
The Kansas City Athletics drafted Ed Blake from Toronto (International) in the 1956 rule 5 draft.
The Cincinnati Redlegs drafted Jerry Lynch from the Pittsburgh Pirates in the 1956 rule 5 draft.
The St. Louis Cardinals drafted Lloyd Merritt from the New York Yankees in the 1956 rule 5 draft.
The Chicago Cubs drafted Cal Neeman from the New York Yankees in the 1956 rule 5 draft.
The Baltimore Orioles drafted Tom Patton from the St. Louis Cardinals in the 1956 rule 5 draft.
The St. Louis Cardinals drafted Bob Smith from the Boston Red Sox in the 1956 rule 5 draft.
The Boston Red Sox drafted Jack Spring from the Philadelphia Phillies in the 1956 rule 5 draft.
The St. Louis Cardinals drafted Chuck Essegian from Sacramento (PCL) in the 1956 minor league draft.
The Cincinnati Redlegs drafted Marion Fricano from the Chicago White Sox in the 1956 minor league draft.
The New York Giants drafted Bill Froats from the Detroit Tigers in the 1956 minor league draft.
The New York Giants drafted Roger McCardell from the Milwaukee Braves in the 1956 minor league draft.
The Detroit Tigers drafted Eddie Phillips from the St. Louis Cardinals in the 1956 minor league draft.
The Kansas City Athletics drafted Leo Posada from the Milwaukee Braves in the 1956 minor league draft.
The Milwaukee Braves drafted Daryl Robertson from the New York Giants in the 1956 minor league draft.
The Detroit Tigers drafted Bob Thorpe from the Milwaukee Braves in the 1956 minor league draft.
The Baltimore Orioles drafted Charlie White from the Milwaukee Braves in the 1956 minor league draft.
The New York Giants drafted Ed White from the Chicago White Sox in the 1956 minor league draft.
The Cincinnati Redlegs drafted Maury Wills from the Brooklyn Dodgers in the 1956 minor league draft.
- December 4, 1956
Chuck Essegian of the St. Louis Cardinals granted free agency.
- December 5, 1956
The Detroit Tigers traded Wayne Belardi, Ned Garver, Gene Host, Virgil Trucks and $20,000 to the Kansas City Athletics for Jack Crimian, Jim Finigan, Bill Harrington and Eddie Robinson.
- December 6, 1956
The Detroit Tigers purchased Mel Clark from the Washington Nationals. (Date given is approximate. Exact date is uncertain.)
(Date given is approximate. Exact date is uncertain.)
- December 10, 1956
The New York Giants signed Bobby Bolin as an amateur free agent.
- December 11, 1956
The New York Yankees traded Charlie Silvera and cash and another player to be named to the Chicago Cubs for a player to be named later. The Chicago Cubs sent Harry Chiti (December 14, 1956) to the New York Yankees to complete the trade.
The Chicago Cubs traded Jim Davis, Sam Jones, Hobie Landrith and Eddie Miksis to the St. Louis Cardinals for Wally Lammers (minors), Jackie Collum, Ray Katt and Tom Poholsky.
- December 13, 1956
The Brooklyn Dodgers traded Jackie Robinson to the New York Giants for Dick Littlefield and $30,000. Jackie Robinson refused to report to his new team. Trade was voided and players returned on December 13, 1956.
- Before 1957 Season
The Chicago Cubs signed Bobby Adams as a free agent.
The Philadelphia Phillies signed John Kennedy as a free agent.
The Baltimore Orioles signed Fred Whitfield as a free agent.
The New York Giants signed Matty Alou as an amateur free agent.
The New York Yankees signed George Banks as an amateur free agent.
The Baltimore Orioles signed Steve Barber as an amateur free agent.
The Milwaukee Braves signed Howie Bedell as an amateur free agent.
The St. Louis Cardinals signed Bud Bloomfield as an amateur free agent.
The Cleveland Indians signed Walt Bond as an amateur free agent.
The St. Louis Cardinals signed Cal Browning as an amateur free agent.
The Brooklyn Dodgers signed Mike Brumley as an amateur free agent.
The Baltimore Orioles signed Leo Burke as an amateur free agent.
The Brooklyn Dodgers signed Larry Burright as an amateur free agent.
The Pittsburgh Pirates signed Tom Butters as an amateur free agent.
The Brooklyn Dodgers signed Doug Camilli as an amateur free agent.
The Pittsburgh Pirates signed Donn Clendenon as an amateur free agent.
The Cincinnati Redlegs signed Mike Cuellar as an amateur free agent.
The Philadelphia Phillies signed Tony Curry as an amateur free agent.
The St. Louis Cardinals signed Jack Damaska as an amateur free agent.
The Brooklyn Dodgers signed Jim Duckworth as an amateur free agent.
The Baltimore Orioles signed Chuck Estrada as an amateur free agent.
The New York Giants signed Bob Farley as an amateur free agent.
The Pittsburgh Pirates signed Joe Gibbon as an amateur free agent.
The St. Louis Cardinals signed Bob Gibson as an amateur free agent.
The Cincinnati Redlegs signed Tony González as an amateur free agent.
The St. Louis Cardinals signed Julio Gotay as an amateur free agent.
The Detroit Tigers signed Bill Graham as an amateur free agent.
The St. Louis Cardinals signed Jack Hamilton as an amateur free agent.
The Kansas City Athletics signed Jay Hankins as an amateur free agent.
The Cleveland Indians signed Chuck Hiller as an amateur free agent.
The Chicago White Sox signed Joe Hoerner as an amateur free agent.
The Chicago Cubs signed Lou Jackson as an amateur free agent.
The Chicago White Sox signed Stan Johnson as an amateur free agent.
The Kansas City Athletics signed Lou Klimchock as an amateur free agent.
The Boston Red Sox signed Hal Kolstad as an amateur free agent.
The Pittsburgh Pirates signed Dick Lines as an amateur free agent.
The New York Yankees signed Phil Linz as an amateur free agent.
The New York Giants signed Juan Marichal as an amateur free agent.
The Milwaukee Braves signed Hector Martinez as an amateur free agent.
The Detroit Tigers signed Dick McAuliffe as an amateur free agent.
The Cincinnati Redlegs signed Manny Montejo as an amateur free agent.
The Detroit Tigers signed Jackie Moore as an amateur free agent.
The Boston Red Sox signed Merlin Nippert as an amateur free agent.
The Philadelphia Phillies signed Ed Olivares as an amateur free agent.
The New York Giants signed John Orsino as an amateur free agent.
The Pittsburgh Pirates signed Tom Parsons as an amateur free agent.
The Kansas City Athletics signed Dan Pfister as an amateur free agent.
The Pittsburgh Pirates signed Elmo Plaskett as an amateur free agent.
The Chicago Cubs signed Don Prince as an amateur free agent.
The Brooklyn Dodgers signed Ed Rakow as an amateur free agent.
The Milwaukee Braves signed Merritt Ranew as an amateur free agent.
The St. Louis Cardinals signed Gordie Richardson as an amateur free agent.
The St. Louis Cardinals signed Dave Ricketts as an amateur free agent.
The Brooklyn Dodgers signed Charley Smith as an amateur free agent.
The Brooklyn Dodgers signed Dick Smith as an amateur free agent.
The New York Yankees signed Bill Stafford as an amateur free agent.
The Washington Senators signed Lee Stange as an amateur free agent.
The Washington Senators signed Sandy Valdespino as an amateur free agent.
The Brooklyn Dodgers signed Carl Warwick as an amateur free agent.
The Philadelphia Phillies signed Bobby Wine as an amateur free agent.
The Detroit Tigers signed Jake Wood as an amateur free agent.
The Chicago Cubs obtained Bob Alexander from Portland (PCL) as part of a minor league working agreement.
The Cleveland Indians obtained Floyd Robinson from San Diego (PCL) as part of a minor league working agreement.
The Cleveland Indians obtained Bob Usher from San Diego (PCL) as part of a minor league working agreement.
The Washington Senators released Choo-Choo Coleman.
The Cleveland Indians released Don Minnick.
The Cleveland Indians released Dan Osinski.
Vicente Amor sent from the Chicago Cubs to the Cincinnati Redlegs in an unknown transaction.
Marshall Bridges sent from the Milwaukee Braves to Sacramento (PCL) in an unknown transaction.
Leo Cárdenas sent from Tucson (Arizona-Mexico) to the Cincinnati Redlegs in an unknown transaction.
Chuck Coles sent from the Brooklyn Dodgers to Albuquerque (Western) in an unknown transaction.
Hal Jones sent from the Kansas City Athletics to the Cleveland Indians in an unknown transaction.
John Romonosky sent from the St. Louis Cardinals to Syracuse (Eastern) in an unknown transaction.
Moose Stubing sent from the Pittsburgh Pirates to the New York Giants in an unknown transaction.
Jim Umbricht sent from Baton Rouge (Evangeline) to the Milwaukee Braves in an unknown transaction.
The Cleveland Indians returned Ted Beard to Indianapolis (American Association) after expiration of minor league working agreement.
The Kansas City Athletics returned Bob Kuzava to Columbus (International) after expiration of minor league working agreement.
The Brooklyn Dodgers returned Jack Littrell to Portland (PCL) after expiration of minor league working agreement.
The Brooklyn Dodgers returned Ed Mickelson to Portland (PCL) after expiration of minor league working agreement.
The Cleveland Indians returned George Spencer to Indianapolis (American Association) after expiration of minor league working agreement.
The Chicago White Sox obtained Ted Beard from Indianapolis (American Association) as part of a minor league working agreement.
The Pittsburgh Pirates obtained Bob Kuzava from Columbus (International) as part of a minor league working agreement.
The Chicago Cubs obtained Jack Littrell from Portland (PCL) as part of a minor league working agreement.
The Chicago Cubs obtained Ed Mickelson from Portland (PCL) as part of a minor league working agreement.
The Chicago White Sox obtained George Spencer from Indianapolis (American Association) as part of a minor league working agreement.
- January, 1957
The New York Yankees purchased Don Bradey from the Detroit Tigers.
The Boston Red Sox traded Bill Henry to the Chicago Cubs for Frank Kellert and cash.
- January 9, 1957
The Cleveland Indians released Bob Feller.
- January 18, 1957
The Cincinnati Redlegs released Bruce Edwards.
- January 27, 1957
The Pittsburgh Pirates signed Jack Lamabe as a free agent.
The Philadelphia Phillies signed Wayne Graham as an amateur free agent.
- February 6, 1957
The Pittsburgh Pirates signed Buddy Pritchard as an amateur free agent (bonus baby).
- February 8, 1957
The Baltimore Orioles purchased Jim Brideweser from the Detroit Tigers.
- February 12, 1957
The Detroit Tigers traded Chick King and cash to the Milwaukee Braves for Jack Dittmer.
- February 19, 1957
The Kansas City Athletics traded players to be named later, Wayne Belardi, Art Ditmar, Jack McMahan and Bobby Shantz to the New York Yankees for a player to be named later, Rip Coleman, Milt Graff, Billy Hunter, Mickey McDermott, Tom Morgan and Irv Noren. The New York Yankees sent Jack Urban (April 5, 1957) to the Kansas City Athletics to complete the trade. The Kansas City Athletics sent Curt Roberts (April 4, 1957) and Clete Boyer (June 4, 1957) to the New York Yankees to complete the trade.
- February 21, 1957
The New York Giants signed Manny Mota as an amateur free agent.
- February 26, 1957
The New York Giants traded Hoyt Wilhelm to the St. Louis Cardinals for Whitey Lockman.
- March, 1957
The Philadelphia Phillies signed Chuck Essegian as a free agent.
The Baltimore Orioles released Fred Whitfield. (Date given is approximate. Exact date is uncertain.)
- March 14, 1957
The Boston Red Sox traded Eli Grba and Gordie Windhorn to the New York Yankees for Bill Renna.
- March 27, 1957
The New York Giants released Bill Sarni.
- April 1, 1957
The Kansas City Athletics returned Ben Flowers to the Philadelphia Phillies as part of a conditional deal. (Date given is approximate. Exact date is uncertain.)
Miami (International) purchased Mickey Micelotta from the Philadelphia Phillies.
The transaction information used here was obtained free of charge from and is copyrighted by RetroSheet. We attempt to update transactions throughout the season.
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