Major League Baseball umpires will wear microphones during the 2020 season to relay the results of replay reviews to fans in attendance and audiences on television and radio, reports ESPN's Pedro Gomez.
The process will be similar to how National Football League referees deliver on-field results to fans, Gomez adds. Umps may also explain the rules behind the decisions.
Reviews initiated by a manager or umpire crew chief are currently conducted by officials at the replay command center in New York City.
Upon determining the results of a reviewed play, umpires, working with the command center via headset, either confirm or reverse the call on the field with little more than a hand signal.
Replay review was instituted in 2008 to re-examine disputed home run calls and was expanded in 2014 to give managers one challenge. The process was modified again in 2015, permitting managers to retain their challenge after successfully overturned decisions.