List of Major League Baseball umpiring leaders
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The following include various records set by umpires in Major League Baseball. Leagues are abbreviated as follows:
- AA – American Association, 1882–1891
- AL – American League, 1901–1999
- FL – Federal League, 1914–1915
- ML – Major League Baseball, 2000–present (AL and NL umpiring staffs were merged in 2000)
- NL – National League, 1876–1999
- PL – Players' League, 1890