Jack Harshman debuted on September 16, 1948, playing for the New York Giants at Polo Grounds IV; he played his final game on October 1, 1960, playing for the Cleveland Indians at Cleveland Stadium.
Jack Harshman played in 15 games at pitcher for the Cleveland Indians in 1960, starting in 8 of them. He played for a total of 163 outs, equivalent to 6.04 9-inning games. He made 2 putouts, had 5 assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had one double play.
Jack Harshman played in 34 games at pitcher for the Baltimore Orioles in 1958, starting in 29 of them. He played for a total of 709 outs, equivalent to 26.26 9-inning games. He made 5 putouts, had 43 assists, and committed one error, equivalent to .038 errors per 9-inning game. He had one double play.
Jack Harshman played in 35 games at pitcher for the Chicago White Sox in 1954, starting in 21 of them. He played for a total of 531 outs, equivalent to 19.67 9-inning games. He made 2 putouts, had 27 assists, and committed one error, equivalent to .051 errors per 9-inning game. He had one double play.
Jack Harshman played in 32 games at pitcher for the Chicago White Sox in 1955, starting in 23 of them. He played for a total of 538 outs, equivalent to 19.93 9-inning games. He made 3 putouts, had 29 assists, and committed one error, equivalent to .05 errors per 9-inning game. He had one double play.
Jack Harshman played in 30 games at pitcher for the Chicago White Sox in 1957, starting in 26 of them. He played for a total of 454 outs, equivalent to 16.81 9-inning games. He made 3 putouts, had 15 assists, and committed one error, equivalent to .059 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.