MLB umpire Eric Cooper dies at 52; did playoffs 2 weeks ago
MLB Fans Threaten to Boycott Over 'Robot Umpires'—'Will Ruin the Game
MLB makes history by naming its first black and Latino-born umpire crew chiefs
The Ultimate Guide to How to Become an MLB Umpire? - NISR
MLB appoints Kerwin Danley as first black umpire crew chief
Umpires Are Less Blind Than They Used To Be
What does an MLB home plate umpire wear for protection? - Quora
On Rain Delays: An Interview With Former MLB Umpire Dale Scott
Status Check: On the Big Stage
Don't Ignore The Signs! How To Become An MLB Umpire.
Joe West (umpire) - Wikipedia
Jamie Samuelsen: Bad umps like Hernandez should be held more accountable
The umpire on the cusp of a watershed moment for baseball: 'I think she's going to do it' - The Athletic
MLB umpires will wear mics to explain review rulings to fans starting this season