Robot umps take large step forward to MLB as Triple-A adopts them
Robo umps reach Triple-A, but MLB rollout still uncertain
Weekend Debate: Should the MLB Use Robo Umps? - Sports Illustrated Pittsburgh Pirates News, Analysis and More
Future Twins Weigh in on an Electronic Strike Zone - Twins - Twins Daily
Robot umps to call balls-strikes in Triple-A in 2022
Triple-A To Use Robot Umpires For 2022
MLB will experiment with new rules in minor leagues in 2021, including defensive shifts and pickoff limits - Athletics Nation
Robo Umps” Coming to all AAA Ballparks in 2023 - Minor Leagues - Twins Daily
The Strike Zone of the Future: You Can't Argue with Technology
MLB catchers wary of looming robo umps amid rules changes
MLB Umpires Missed 34,294 Ball-Strike Calls in 2018. Bring on Robo-umps?, Bostonia
MLB debuts 'robot umpires' for some Triple-A games as emergence in the majors looms