MLB's Replay System Is Now A Huge Money-Maker For The Owners
MLB umpire hospitalized after being hit in head by throw - Los Angeles Times
MLB umpires may get on-field microphones to explain replay review outcomes - Bless You Boys
Dodgers news: MLB's first umpire announcement for replay reviews - True Blue LA
Unified Communications in Baseball: Anatomy of a Replay Review
Hurley: MLB replay review is not making much sense this week - CBS Boston
Will Expanded Instant Replay Lead To More Women Umpires?
New book fosters greater appreciation for plight of MLB umpires - Fish Stripes
Major League Baseball's worst call ever: Expanding instant replay - Los Angeles Times
MLB Umpires To Wear Microphones & Announce Replay Decisions To Fans
Angel Hernandez's Blown Call Must Lead to Revamping of MLB's Replay System, News, Scores, Highlights, Stats, and Rumors
Major League Baseball approves expanded instant replay, managers can challenge up to two calls a game – New York Daily News