Umpires Who Were Former Major League Baseball Players Baseball Almanac is pleased to present a comprehensive list of EVERY former Major League ballplayer who became a Major League umpire. Included on the player-to-umpire roster are complete names, links to each players' Major League statistics, their player debut date, and their years of service as an umpire. Note: There are many instances, especially during the early years of baseball, where an active player was used as an umpire during a game for various reasons. These unique player-umpire instances are NOT included on this page which focuses on "official" cross-over umpires.

"I demand respect on the field from managers and players. To me, that's 75% of umpiring." - Former Player and Hall of Fame Umpire John "Jocko" Conlan in the Hall of Fame Yearbook (1989)