Michael Dwyer/Associated Press
En route to winning the World Series in 2018, the Boston Red Sox reportedly used their replay room to decode the opposition's signs.
According to Ken Rosenthal and Evan Drellich of The Athletic, three anonymous people who were part of the Red Sox organization in 2018 said some players would go to the replay room during games to gain information regarding their opponents' signs.
Boston's alleged misuse of the replay room came after a crackdown from Major League Baseball. Ahead of the 2018 season, MLB made it clear that the replay rooms could be used only for determining whether to challenge plays and not to steal signs.