Jack Heidemann debuted on May 2, 1969, playing for the Cleveland Indians at Cleveland Stadium; he played his final game on May 10, 1977, playing for the Milwaukee Brewers at County Stadium.
Jack Heidemann played in just one game at designated hitter for the Milwaukee Brewers in 1976 and did not start. , equivalent to 0 errors per game (estimate based on total games played in).
Jack Heidemann played in 3 games at designated hitter for the Milwaukee Brewers in 1977, starting in none of them. , equivalent to 0 errors per game (estimate based on total games played in).
Jack Heidemann played in just one game at second base for the Cleveland Indians in 1974 and did not start. He played for a total of 3 outs, equivalent to .11 9-inning games. He made one putout, had one assist, and committed no errors, equivalent to 0 errors per 9-inning game. He had one double play.
Jack Heidemann played in just one game at second base for the Milwaukee Brewers in 1977 and did not start. He played for a total of 3 outs, equivalent to .11 9-inning games. He made 2 putouts, had one assist, and committed no errors, equivalent to 0 errors per 9-inning game. He had one double play.
Jack Aker debuted on May 3, 1964 and played his final game on September 27, 1974.
Jack Albright debuted on May 19, 1947 and played his final game on July 27, 1947.
Jack Allen debuted on May 1, 1879 and played his final game on July 17, 1879.
Jack Aragon debuted on August 13, 1941 and played his final game on August 13, 1941.
Jack Baker debuted on September 11, 1976 and played his final game on June 8, 1977.
Jack Baldschun debuted on April 28, 1961 and played his final game on August 21, 1970.
Jack Banta debuted on September 18, 1947 and played his final game on June 21, 1950.
Jack Barry debuted on July 13, 1908 and played his final game on June 23, 1919.