Warren Hacker debuted on September 24, 1948, playing for the Chicago Cubs at Wrigley Field; he played his final game on September 29, 1961, playing for the Chicago White Sox at Comiskey Park.
Warren Hacker played in 20 games at pitcher for the Philadelphia Phillies in 1957, starting in 10 of them. He played for a total of 222 outs, equivalent to 8.22 9-inning games. He made 7 putouts, had 5 assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had one double play.
Warren Bogle debuted on July 31, 1968 and played his final game on September 15, 1968.
Warren Brusstar debuted on May 6, 1977 and played his final game on October 3, 1985.
Warren Cromartie debuted on September 6, 1974 and played his final game on September 15, 1991.
Warren Fitzgerald debuted on June 4, 1891 and played his final game on June 8, 1892.
NFL player Jeremiah Warren played for South Florida.
NFL player Pierre Warren played for Jacksonville State.
NFL player Greg Warren played for North Carolina.
Rich Hacker debuted on July 2, 1971, playing for the Montreal Expos at Jarry Park; he played his final game on September 29, 1971, playing for the Montreal Expos at Jarry Park.
NBA player T.J. Warren played for North Carolina State.
Bill Warren debuted on April 30, 1914, playing for the Indianapolis Hoosiers at ; he played his final game on May 23, 1915, playing for the Newark Pepper at .
Warren White debuted on June 17, 1871, playing for the Washington Olympics at Olympics Grounds; he played his final game on June 27, 1884, playing for the Washington Nationals at .