MLB approves use of electronic device to relay signs to pitchers
Willson Contreras: Cubs' PitchCom 'OK' but system can be improved – NBC Sports Chicago
What is PitchCom and why is Max Scherzer against it? - The Athletic
Sign of times: MLB approves use of anti-sign-stealing technology for calling pitches
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MLB pitchers, catchers testing new audio communication system
Major League Baseball approved use of electronic device for catchers to signal pitches in effort to eliminate sign stealing - ABC13 Houston
Houston Astros manager, GM fired after suspensions for team's sign-stealing
Brewers agree to extended deal with pitcher Aaron Ashby, add reliever Jake McGee
Sign stealing - Wikipedia
Astros, Red Sox sign-stealing timeline: Everything we know about MLB scandals
MLB Approves PitchCom to Limit Sign Stealing - The New York Times
SportTechie's 2019 Outstanding Innovation: Automated Strike Zones
