Major League Baseball umpire loses appeal of discrimination lawsuit
Umpire (baseball) - Wikipedia
MLB Fans Threaten to Boycott Over 'Robot Umpires'—'Will Ruin the Game
MLB umpires have a new signal to call this spring - Sports Illustrated
Center Field on Fire: An Umpire's Life with Pine tar Bats, Spitballs, and Corked Personalities: 9781572435698: Phillips, Dave, Rains, Rob, Costas, Bob: Books
CB Bucknor proves that MLB umpires are essentially employed for life
Can you still yell at robot umpires? Future of baseball getting mixed reviews in minors
Baseball's new electronic strike zone debuts in Worcester
Umpire mocks challenge on hot mic that ultimately gets changed