Jocko Milligan debuted on May 1, 1884, playing for the Philadelphia Athletics at Jefferson Street Grounds; he played his final game on September 26, 1893, playing for the New York Giants at Polo Grounds III.
Jocko Milligan played in 3 games at first base for the Philadelphia Athletics in 1890, starting in none of them. He made 26 putouts, had no assists, and committed one error, equivalent to .333 errors per game (estimate based on total games played in). He had one double play.
Jocko Milligan played in 5 games at first base for the St. Louis Browns in 1888, starting in none of them. He made 38 putouts, had one assist, and committed no errors, equivalent to 0 errors per game (estimate based on total games played in). He had one double play.
Jocko Conlan debuted on July 6, 1934 and played his final game on September 29, 1935.
Jocko Conlon debuted on April 17, 1923 and played his final game on October 6, 1923.
Jocko Fields debuted on May 31, 1887 and played his final game on June 11, 1892.
Jocko Flynn debuted on May 1, 1886 and played his final game on May 23, 1887.
Jocko Halligan debuted on May 13, 1890, playing for the Buffalo Bisons at ; he played his final game on August 3, 1892, playing for the Baltimore Orioles at Union Park.
Randy Milligan debuted on September 12, 1987, playing for the at ; he played his final game on August 11, 1994, playing for the Montreal Expos at Stade Olympique.
Jocko Conlon debuted on April 17, 1923, playing for the Boston Braves at Braves Field; he played his final game on October 6, 1923, playing for the Boston Braves at Braves Field.
Jocko Thompson debuted on September 21, 1948, playing for the Philadelphia Phillies at Shibe Park; he played his final game on September 16, 1951, playing for the Philadelphia Phillies at Shibe Park.
Jocko Conlan debuted on July 6, 1934, playing for the Chicago White Sox at Comiskey Park; he played his final game on September 29, 1935, playing for the Chicago White Sox at Comiskey Park.
Jocko Fields debuted on May 31, 1887, playing for the Pittsburg Alleghenys at Recreation Park; he played his final game on June 11, 1892, playing for the New York Giants at Polo Grounds III.