1. Devin Williams (2021)
Williams was a key member of the Milwaukee Brewers’ bullpen when he made the worst decision of his career. It came after a night of drunken celebration that went badly wrong. The Brewers won the NL Central title and were set to meet the St. Louis Cardinals in the postseason. It should have been a highlight moment for Williams but he became upset and punched a wall.
The reliever broke his hand in the process. Needless to say, fans thought it was ridiculous. The worst part was that Williams was a very important player for his team. He had an 8-2 record with a 2.50 ERA in 58 games and struck out 87 batters in 54 innings (via New York Post). Williams apologized to the organization and his fans because he was a moron. In the end, he knew it was all his fault.