Template:Today in Baseball/December 1
- 1954 - The Largest Trade in Baseball History is finalized as 8 more players are named to bring the deal to 17 players. Don Larsen and Bob Turley (pictured) go from the Baltimore Orioles to the New York Yankees while Gus Triandos is one of the better pick-ups for Baltimore in the deal.
- 1962 - A major minor league reorganization takes place. The B, C and D classifications are scrapped and the Rookie level is added.
- 1971 - The Chicago Cubs release star Ernie Banks, ending his 19-year career. Banks will make the Hall of Fame.
- 1971 - The Baltimore Orioles engineer a trade for Pat Dobson, who will win 20 games for them next year.
- 2011 - Takuya Asao wins the 2011 Central League Most Valuable Player Award despite being primarily a set-up man; his 0.41 ERA, 7-2 record and 10 saves are enough to convince the voters.