MLB warned clubs of using tech in sign-stealing before Astros err
Houston Astros cleared of wrongdoing in 2020: MLB explored wearable devices during the investigation but found no evidence to substantiate it
MLB sign stealing: History of allegations before Astros, Red Sox scandal - Sports Illustrated
Sign-stealing scandal: Should MLB restrict the use of technology or embrace it? - Los Angeles Times
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Rob Arthur] Moonshot: The Astros' Sign-Stealing Left A Fingerprint In The Audio Data : r/baseball
Astros players offer apologies over 2017 sign-stealing while avoiding specifics - The Boston Globe
The Boston Red Sox Were Implicated in a New Sign-Stealing Scandal
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