Pitching Data Helps Quantify Umpire Mistakes
Play Ball! UConn Magazine
No longer behind a mask, Scott gets his due
MLB Can Learn from Independent League's 'Robot Umpire' Experiment, News, Scores, Highlights, Stats, and Rumors
Bernie: C.B. Bucknor Finally Shook Oli Marmol's Hand. How Nice. But Why Is This Man Still Working As An MLB Umpire? - Scoops
New Automatic Balls and Strikes system makes its Polar Park debut
For aspiring major league umpires, the road is long and hard - ESPN
Change in gear was a strike for consistent umpiring
Sources - 10 MLB umps retiring, most since '99 - ESPN
Solving the Umpire Shortage in Youth Sports Requires a Team Approach — HiCast Sports
Will baseball ever replace umpires with robots?