Tom Hallion

Thomas Francis Hallion (born September 5, 1956) is a retired Major League Baseball umpire who worked in the National League (NL) from 1985 to 1999 and in both major leagues from 2005 until 2022. He was promoted to crew chief in 2010. Hallion has worn number 20 during his MLB career. He resigned from the NL in 1999 as part of a failed mass bargaining strategy, but he was rehired by MLB before the 2005 season.

Tom Hallion
Hallion in 2011
Born: (1956-09-05) September 5, 1956
Kingston, New York, U.S.
MLB debut
June 10, 1985
Last appearance
October 5, 2022
Career highlights and awards
Special Assignments
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