Minor league baseball umpires agree on new labor deal
Joe West Breaks Record for Games Umpired - The New York Times
ABS system gets rigorous test at Futures Game
2022 Official Rules of Major League Baseball
On the Long Road, Committed to a Goal of Officiating in the Major Leagues - The New York Times
AP Exclusive: Computer plate umps allowed in new labor deal
MLB ump Vanover still in hospital after hit in head by throw
Kinsler, Ausmus respond to umpire protests
MLB Umpires Missed 34,294 Ball-Strike Calls in 2018. Bring on Robo-umps?, Bostonia
Major League Baseball Umpires Association (@MLBUA) / X
Baseball umpires aren't blind. They just have trouble breathing, study of balls and strikes shows
Does Baseball Need Umpires? - WSJ
The road is rough — but these wannabe Major League Baseball umpires are keeping their eyes on the ball
Umpire Jen Pawol is working her way to MLB - The Washington Post