MLB's new pace of play rules will mean changes for Willson Contreras - Bleed Cubbie Blue
MLB umpires will make in-ballpark announcements to explain replay review decisions in 2022
Beyond the grunt: Umpires mic up, and baseball changes a bit
MLB Umps Are Getting More New Rules Wrong, Says Yanks Coach - InsideHook
Dodgers news: MLB's first umpire announcement for replay reviews - True Blue LA
Sara Sanchez (@BCB_Sara) / X
Mic'd-up umpires would make replay reviews less confusing and even provide some comedy – New York Daily News
MLB Umpires to Use On-Field Microphones to Announce Replay Review Decisions to Fans, News, Scores, Highlights, Stats, and Rumors
At last, MLB umpires will communicate with fans about replay reviews - Bleed Cubbie Blue