It's been rumored that the Astros used an electronic device taped to their body that transmitted vibrations based on what pitch is coming. Here is a close up slow motion gif of
Fact Check: Did the Astros call Jose Altuve Daddy during live game vs. Red Sox? Team's broadcaster posts bizarre on-screen question
José Altuve's Three Home Runs Lead Astros Past Red Sox in ALDS Game 1 - The Ringer
Astros: Proof that Jose Altuve had a tattoo during 2019 World Series
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MLB playoffs: How should we feel about the Astros? - Sports Illustrated
ESPN The Magazine looks at the best MLB playoffs ever
What is the most glaring issue you see with with the current MLB? Why? : r/baseball
Reviews - GEORGE VECSEY
George Springer is a brave dude. He does not shy away from interviews despite his life long stuttering problem and is a great advocate for kids who struggle with stuttering. : r/baseball
Why Jose Altuve did not want his Jersey removed. - The Crawfish Boxes
Astros Cheating in 2019 ALCS? Don't Rip My Shirt! - José Altuve
Jose Altuve hits 3 home runs in Houston Astros' playoff opener against Boston Red Sox - ESPN
ALCS Game 4: How Astros' victory over Red Sox played out
Astros Absolutely Robbed by MLB and Phantom Fan Interference Call: Epic Playoff Game Marred by Unfathomable Replay Decision — and Houston's Repeat Bid May Die Because of It