This is why MLB umpires are wearing microphones this season
Umpires to Wear JM, EC Patches in 2019 World Series – SportsLogos.Net News
MLB Umpire Caught On Hot Mic During Marlins-Angels Game Saying “They've Got Their Heads Up Their Ass”
MLB umpires may soon take to mic to explain replays
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Report: MLB umps may soon take to mic to explain replay decisions
This is why MLB umpires are wearing microphones this season
