The following are baseball related events, births, and deaths that took place on December 30.

Events

• 1907 – The Mills Commission erroneously reports that baseball was invented by Abner Doubleday in Cooperstown, New York in 1839.
• 1926 – The Chicago Tribune breaks a story that the Detroit Tigers had thrown a four-game series to the Chicago White Sox in 1917 to help Chicago win the pennant.
• 1943 – The Philadelphia Phillies trade Babe Dahlgren to the Pittsburgh Pirates for Babe Phelps and cash considerations.
• 1995 – Kenny Rogers signs with the New York Yankees to a four-year contract.
• 2002 – Roger Clemens signs a $10.1 million, one-year deal with the New York Yankees.

Births

• 1931 – Frank Torre, infielder
• 1935 – Sandy Koufax, pitcher; All-Star, Hall of Famer
• 1976 – A. J. Pierzynski, catcher; All-Star
• 1977 – Grant Balfour, pitcher

Deaths

• 1962 – Joe Boley, infielder (b. 1896)