Following a career of a MLB umpire

Jamie Samuelsen: Bad umps like Hernandez should be held more accountable

Major League Baseball umpires: Danger zone ahead?

Bob Engel, former MLB umpire with Bakersfield roots, dies at 84 with dubious distinction, Sports

After 24-year ump career, Lockport native John Shulock mostly mum

Gibson makes final call: MLB umpire retires after 24-year career : r/baseball

Umpire (baseball) - Wikipedia

MLB Umpires Missed 34,294 Ball-Strike Calls in 2018. Bring on Robo-umps?, Bostonia

Little League® International Applauds Umpire Gerry Davis on His Milestone Achievement - 5,000th MLB Game - Little League

Joe West: Legendary MLB umpire sets career record for games

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