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
Jose Altuve 'Don't rip off my jersey' ALCS statement in question
Astros' star Jose Altuve denies wearing sign-stealing device under jersey
Altuve yells Don't RIP off my jersey in the 2019 ALCS : r/baseball
Altuve yells Don't RIP off my jersey in the 2019 ALCS : r/baseball
Jose Altuve in 2019: I'm too shy. But last time they did that, I got in trouble with my wife
The Houston Astros Got Caught Cheating - Forward Times
VIDEO: Jose Altuve Begging Teammates Not to Rip Off His Jersey After Aroldis Chapman Walk-Off Looks Suspicious
Why Jose Altuve did not want his Jersey removed. - The Crawfish Boxes
Jose Altuve: Don't rip my jersey off!
Jose Altuve 'Don't rip off my jersey' ALCS statement in question
Don't rip my shirt off - Jose Altuve
Astros Wearing Buzzers, Major League Baseball, News, Scores, Highlights, Stats, and Rumors
Astros' star Jose Altuve denies wearing sign-stealing device under jersey