MLB umpires' union clarifies use of electronics at spring training sites - ESPN
Minor leaguer sends call for help after robot strike zone messes up National News - Bally Sports
Major League Baseball expands 'robot umpire' use throughout all 30 Triple-A ballparks
Report: Automatic strike zone trial has been a disaster
Is it time for MLB to use an automated strike zone?
MLB's robot umpires may soon change baseball forever - Sports Illustrated
BenFred: The Cardinals are baseball's hottest team since the trade deadline. Here's why.
You're going to see the robot umpires sooner than you think - Bleed Cubbie Blue
Major League Baseball tests robot umpires Arizona Fall League
BenFred: MLB umpires, you're out. It's time for an automated strike zone.
Atlantic League coach ejected for arguing over automated strike zone just one inning into robot umpire era