New Wireless Audio Lets MLB Umpires Make All the Calls Very Loud
Umpires to announce replay reviews to fans
Ahead of the World Series, Phillies radio announcer shares the art
MLB umpire honors teen ump whose call led to a youth baseball game
Grant Anderson strikes out seven in debut vs. Tigers
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MLB news: Umpires to use microphones to announce replay decisions
MLB umpires to announce replay review decisions to fans - ESPN