John Grabow debuted on September 14, 2003, playing for the Pittsburgh Pirates at PNC Park; he played his final game on September 20, 2011, playing for the Chicago Cubs at Wrigley Field.
John Baker debuted on July 9, 2008 and played his final game on May 21, 2013.
John Bateman debuted on April 19, 1963 and played his final game on October 3, 1972.
John Boozer debuted on July 22, 1962 and played his final game on October 1, 1969.
John Briggs debuted on April 17, 1956 and played his final game on September 4, 1960.
John Briscoe debuted on April 18, 1991 and played his final game on May 21, 1996.
John Grabow played in 63 games at pitcher for the Pittsburgh Pirates in 2005, starting in none of them. He played for a total of 156 outs, equivalent to 5.78 9-inning games. He made no putouts, had 7 assists, and committed one error, equivalent to .173 errors per 9-inning game. He had one double play.
John Grabow played in 74 games at pitcher for the Pittsburgh Pirates in 2008, starting in none of them. He played for a total of 228 outs, equivalent to 8.44 9-inning games. He made 3 putouts, had 9 assists, and committed one error, equivalent to .118 errors per 9-inning game. He had one double play.
John kennedy aug. 1957,
John Ellis debuted on May 17, 1969 and played his final game on October 3, 1981.
John Dodge debuted on August 29, 1912 and played his final game on October 5, 1913.
John Baumgartner debuted on April 14, 1953 and played his final game on April 21, 1953.
John Burke debuted on June 27, 1902 and played his final game on July 15, 1902.
John Burkett debuted on September 15, 1987 and played his final game on September 26, 2003.
John Cassidy debuted on April 24, 1875 and played his final game on August 12, 1885.
John Cerutti debuted on September 1, 1985 and played his final game on October 5, 1991.
John Crowley debuted on May 1, 1884 and played his final game on September 10, 1884.
John Dagenhard debuted on September 28, 1943 and played his final game on October 3, 1943.