1980 Seattle Mariners Trades and Transactions

Transactions listed are from October 1 of previous year to April 1 of the following year.

• November 1, 1979

  Wayne Twitchell granted Free Agency.

  Bobby Valentine granted Free Agency.

  Traded Ruppert Jones and Jim Lewis to the New York Yankees. Received Rick Anderson, Jim Beattie, Juan Beníquez and Jerry Narron.

• November 9, 1979

  Purchased Dan O'Brien from the St. Louis Cardinals.

• November 21, 1979

  Purchased Kip Young from the Detroit Tigers.

• December 1, 1979

  Willie Horton granted Free Agency.

• December 5, 1979

  Traded John Montague to the California Angels. Received a player to be named later. The California Angels sent Jim Anderson (December 5, 1979) to the Seattle Mariners to complete the trade.

• December 6, 1979

  Traded a player to be named later, Rob Pietroburgo (minors) and Rafael Vásquez to the Cleveland Indians. Received Ted Cox. The Seattle Mariners sent Bud Anderson (March 29, 1980) to the Cleveland Indians to complete the trade.

• December 20, 1979

  Signed Willie Horton as a free agent.

• Before 1980 Season

  Released Leroy Stanton.

• January 11, 1980

  Drafted Bill Mooneyham in the 1st round (13th pick) of the 1980 amateur draft (January Secondary), but did not sign the player.

  Drafted Dan Firova in the 2nd round of the 1980 amateur draft (January Secondary).

• March 20, 1980

  Signed Lenny Randle as a free agent.

• March 25, 1980

  Released Danny Walton.

• March 29, 1980

  Released Dan O'Brien.

• April 1, 1980

  Lenny Randle player rights sold to the Chicago Cubs.

  Traded Odell Jones to the Pittsburgh Pirates. Received a player to be named later and cash. The Pittsburgh Pirates sent Larry Andersen (October 29, 1980) to the Seattle Mariners to complete the trade.

• April 6, 1980

  Signed Kim Allen as a free agent.

• April 9, 1980

  Selected Dave Heaverlo off waivers from the Oakland Athletics.

• April 14, 1980

  Signed Manny Sarmiento as a free agent.

• April 24, 1980

  Purchased Dave Roberts from the Pittsburgh Pirates.

• June 3, 1980

  Drafted Harold Reynolds in the 1st round (2nd pick) of the 1980 amateur draft (June Secondary).

  Drafted Darnell Coles in the 1st round (6th pick) of the 1980 amateur draft. Player signed June 13, 1980.

  Drafted Matt Young in the 2nd round of the 1980 amateur draft.

  Drafted Donell Nixon in the 10th round of the 1980 amateur draft.

  Drafted Ed Vande Berg in the 13th round of the 1980 amateur draft.

  Drafted John Moses in the 16th round of the 1980 amateur draft.

  Drafted Rusty McNealy in the 17th round of the 1980 amateur draft.

  Drafted Ernie Riles in the 21st round of the 1980 amateur draft, but did not sign the player.

• June 14, 1980

  Signed Paul Serna as an amateur free agent.

• June 16, 1980

  Purchased Casey Parsons from the San Francisco Giants.

• June 19, 1980

  Charlie Beamon player rights sold to the Toronto Blue Jays.

• June 20, 1980

  Purchased Marc Hill from the San Francisco Giants.

• August 8, 1980

  Released Bob Stinson.

• October 22, 1980

  Bill Stein granted Free Agency.

• October 24, 1980

  Juan Beníquez granted Free Agency.

• November 4, 1980

  Dave Roberts granted Free Agency.

• November 18, 1980

  Traded a player to be named later and Larry Milbourne to the New York Yankees. Received Brad Gulden and $150,000. The Seattle Mariners sent Brad Gulden (May 18, 1981) to the New York Yankees to complete the trade.

• November 28, 1980

  Marc Hill granted Free Agency.

• December 6, 1980

  Purchased Mario Guerrero from the Oakland Athletics.

• December 8, 1980

  Drafted Gary Gray from the Cleveland Indians in the 1980 rule 5 draft.

  John Hobbs drafted by the Minnesota Twins in the 1980 rule 5 draft.

• December 12, 1980

  Traded Larry Cox, Rick Honeycutt, Willie Horton, Mario Mendoza and Leon Roberts to the Texas Rangers. Received Steve Finch (minors), Brian Allard, Rick Auerbach, Ken Clay, Jerry Don Gleaton and Richie Zisk.

  Traded Byron McLaughlin to the Minnesota Twins. Received Willie Norwood.

• December 19, 1980

  Traded Steve Stroughter to the Minnesota Twins. Received Mike Bacsik.

• February 17, 1981

  Signed Dave Skaggs as a free agent.

• March 7, 1981

  Traded Carlos Diaz to the Atlanta Braves. Received Jeff Burroughs.

• March 26, 1981

  Released Ted Cox.

  Released Rob Dressler.

  Released Dave Heaverlo.

  Released Willie Norwood.

  Traded Rod Craig to the Cleveland Indians. Received Wayne Cage.

• March 28, 1981

  Released Mike Bacsik.

• March 31, 1981

  Released Dave Skaggs.

• April 1, 1981

  Released Mario Guerrero.