John Johnstone debuted on September 3, 1993, playing for the Florida Marlins at Joe Robbie Stadium; he played his final game on September 30, 2000, playing for the San Francisco Giants at PacBell Park.
Jay Johnstone debuted on July 30, 1966, playing for the California Angels at Anaheim Stadium; he played his final game on October 6, 1985, playing for the at .
John Johnstone played in 47 games at pitcher for the San Francisco Giants in 2000, starting in none of them. He played for a total of 150 outs, equivalent to 5.56 9-inning games. He made 3 putouts, had 6 assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had one double play.
Jay Johnstone played in 4 games at designated hitter for the Oakland Athletics in 1973, starting in none of them. , equivalent to 0 errors per game (estimate based on total games played in).
Jay Johnstone played in 5 games at designated hitter for the New York Yankees in 1978, starting in none of them. , equivalent to 0 errors per game (estimate based on total games played in).
John kennedy aug. 1957,
John Cumberland debuted on September 27, 1968 and played his final game on July 27, 1974.
John Abadie debuted on April 26, 1875 and played his final game on June 10, 1875.
John Ake debuted on May 12, 1884 and played his final game on July 15, 1884.
John Allen debuted on June 2, 1914 and played his final game on June 2, 1914.
John Anderson debuted on September 8, 1894 and played his final game on October 2, 1908.
John Andre debuted on April 16, 1955 and played his final game on July 16, 1955.
John Andrews debuted on April 8, 1973 and played his final game on September 19, 1973.