Per MLB.com's Adam McCalvy, Williams said that he had too much to drink during the celebration and punched a wall on his way home.
"I had a few drinks. On my way home, I was a little frustrated, upset and I punched a wall," Williams said. That's how it happened."
He needs surgery and is expected to miss the playoffs.
“I’m pretty upset with myself, there’s no one to blame but me," Williams continued. "I feel like I’ve let my team down, our coaching staff, our fans, you know — everyone. I know how big of a role I play on this team and there’s a lot of people counting on me.”
Brutal blow for Brewers
Williams and the team didn't realize the severity of his injury until he felt discomfort trying to throw on Tuesday, leading to X-rays that revealed the fracture. The Brewers placed Williams on the 10-day injured list on Wednesday. President of baseball operations David Stearns said that there's a chance that Williams could pitch in the World Series if the Brewers advance.
Milwaukee's hopes of making it that far took a significant blow with Williams' injury. He's the reigning NL Rookie of the Year and Reliever of the Year and earned Cy Young Award votes in 2020 for his efforts out of the Brewers bullpen. In 58 appearances this season, Williams has a 2.50 ERA with 87 strikeouts and 28 walks in 54 innings.
In tandem with All-Star closer Josh Hader, Williams led a bullpen that could be counted on to secure a late lead. Combined with a rotation featuring three All-Star starters boasting sub-3.0 ERAs in Brandon Woodruff, Corbin Burnes and Freddy Peralta, Milwaukee was set to enter the postseason with a staff that could anchor a World Series run.
The loss of Williams instead leaves the Brewers scrambling to alter their pitching strategy with NLDS play slated to start on Oct. 8.