Most of the scenes filmed in a ballpark were filmed at Rickwood Field in Birmingham, Alabama. Rickwood Field is designed from the old Forbes Field in Pittsburgh.
Despite how he was portrayed in the film, the real Mickey Cochrane was able to manage the Detroit Tigers to a playoff appearance and serve in WW II.
Tommy Lee Jones had broken his leg prior to filming. He performed most of his role in a cast. The scene in the ballgame was shot last, when he had regained some mobility.
The fastball to the head Cobb refers to concerning Mickey Cochrane took place at Yankee stadium, and was tossed by Yankees pitcher Bump Hadley.
Ty Cobb's hometown of Royston, GA is 20 miles from Demorest, GA; the hometown of professional baseball player Johnny Mize. Mize was a first baseman for the St. Louis Cardinals, New York Giants, and New York Yankees. He played in the Major Leagues from 1936 through 1953 and was inducted into the Baseball Hall of Fame in 1981.