Sign of times: Major League Baseball gives OK to electronic pitch
Rays praise PitchCom electronic pitch-calling device
MLB Approves PitchCom to Limit Sign Stealing - The New York Times
College baseball goes high-tech to send pitch calls to mound
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Astros dismiss sign-stealing implications by White Sox pitcher – Houston Public Media
The Forgotten History of MLB's Pitch Clock - The Ringer
Why I Love the Little League Baseball World Series
Houston Astros: Competitors hypocritical about sign-stealing
This is the electronic sign system the Pirates, others are using
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MLB is tweaking some of its new rules, but the pitch timer limits will remain - Bleed Cubbie Blue
Dodgers suspected Astros' sign-stealing before 2017 World Series - Los Angeles Times
Major League Baseball gives OK to electronic pitch calling
