MLB commentators in disbelief after 'absolute embarrassment' as fans label controversial call the 'worst in history
At last, MLB umpires will communicate with fans about replay reviews - Bleed Cubbie Blue
Umpires might get microphones to explain video reviews, and nothing can possiblie go wrong
Umpires to wear NFL style mics to communicate instant replay review: report – New York Daily News
At last, MLB umpires will communicate with fans about replay reviews - Bleed Cubbie Blue
Major League Baseball approves expanded instant replay, managers can challenge up to two calls a game – New York Daily News
Beyond the grunt: Umpires mic up, and baseball changes a bit
Umpires to wear NFL style mics to communicate instant replay review: report – New York Daily News
MLB Umpires to Use On-Field Microphones to Announce Replay Review Decisions to Fans, News, Scores, Highlights, Stats, and Rumors
New Wireless Audio Lets MLB Umpires Make All the Calls Very Loud and Clear