Umpire (baseball) - Wikipedia

Dalton Johnson on X: The Wikipedia page for Gabe Morales, the umpire who called the check swing on Wilmer Flores to end the Giants-Dodgers NLDS, has been changed to “legally blind” /

Ramon De Jesus - Wikiwand

John Libka - Wikipedia

D. J. Reyburn - Wikipedia

Instant replay in Major League Baseball - Wikipedia

Ángel Hernández (umpire) - Wikipedia

Ed Hickox (umpire) - Wikipedia

Toby Basner - Wikipedia

Why are there still umpires in Major League Baseball? Why can't it all be automated? - Quora

Wikipedia:WikiProject Baseball/Umpires task force - Wikipedia

Adrian Johnson (umpire) - Wikipedia