MLB replays could vanish in deal with umpires, 'monastery setup' possible
Beyond the grunt: Umpires mic up, and baseball changes a bit
MLB's Replay System Is Now A Huge Money-Maker For The Owners
MLB may give microphones to umpires to explain replays
Will Expanded Instant Replay Lead To More Women Umpires?
Replay era gets under way
Baseball needs replay
Umpires to announce replay reviews to fans
MLB umpire shares his opinion of new rules: Ken Rosenthal's conversation with Dan Bellino - The Athletic