Confident umpires can improve baseball's pace issues
Umpire (baseball) - Wikipedia
MLB Umpires Association, adamant that crews are simply upholding rule, address home-plate collision rule in statement - ESPN
MLB makes history by naming its first black and Latino-born umpire crew chiefs | CNN
Robot Umpires Could Be Coming to MLB as Soon as 2024 - CNET
/cdn.vox-cdn.com/uploads/chorus_image/image/69113435/usa_today_15881294.0.jpg "MLB umpires should be mic'd up to explain reviews and ejections - Bleed Cubbie Blue")
MLB umpires should be mic'd up to explain reviews and ejections - Bleed Cubbie Blue
Umpire (baseball) - Wikipedia
Rookie MLB umpire Malachi Moore knows about dealing with pressure - Los Angeles Times
For Volunteer Umpires, Little League World Series in the Pinnacle - The New York Times
Ben May (umpire) - Wikipedia
Robo umps reach Triple-A, but MLB rollout still uncertain | AP News
Robot umpire: Baseball edges closer to implementing automatic strike zone in major leagues
Is Pat Hoberg the Greatest MLB Umpire of This Generation? - The Forkball
IHSAA baseball: Umpire shortage is cancelling games
Adrian Johnson, Alan Porter named crew chiefs
Umpire - Simple English Wikipedia, the free encyclopedia
Definition of the Little League® Strike Zone - Little League
MLB umpire job responsibilities
Baseball Umpires Don't Get Overtime. Does That Affect Extra Innings? : NPR
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Major league umpires wear wristbands to protest 'escalating verbal attacks' from players - SBNation.com
A Longtime Umpire Says He Is Gay - The New York Times
