MLB umpire job responsibilities
A New Study Shows Umpire Discrimination Against Non-White Players - Baseball ProspectusBaseball Prospectus
Beyond the grunt: Umpires mic up, and baseball changes a bit
The first openly gay Major League Baseball umpire reflects on coming out, Coors Field and the 'robo-umpire
MLB umpire hospitalized after being hit in head by throw - Los Angeles Times
A Longtime Umpire Says He Is Gay - The New York Times
Hey MLB, learn from the NFL's referee debacle before baseball loses its integrity – New York Daily News
Ten MLB Umpires Set To Retire Ahead Of The 2023 Season
MLB Official Information
MLB umpires' union clarifies use of electronics at spring training sites - ESPN
MLB umpires should be mic'd up to explain reviews and ejections - Bleed Cubbie Blue
Hoornstra: Major league umpires, minus a few veterans, get a crash course in new baseball – Daily News
MLB hires first full-time umpire from Puerto Rico
Robot Umpires Are Ready. Can Baseball Handle This Curveball?
MLB umpire Eric Cooper dies at 52; did playoffs 2 weeks ago