The Cubs are shaking up their pitching staff, adding prospect Hunter Bigge to the bullpen.

In a corresponding move, Colten Brewer was placed in the 60-day IL, creating space on both the 26-man and 40-man roster for Bigge. Brewer has a left hand fracture suffered when he punched the wall of the Cubs dugout after coming out of Saturday’s game.

“When [Craig Counsell] took me out of the game yesterday, I paced in the dugout a couple times and my frustration got the best of me,” Brewer said Sunday morning. “Just let a couple of punches into the wall. My intention wasn’t to break my hand – we all get frustrated and make mistakes and that’s no excuse. … Emotions just get the best of us sometimes.

“Letting my family down, friends, teammates, people of Wrigleyville. It’s kind of heartbreaking to me right now. There’s no pain in it right now. I can’t believe something like that happened.”

Brewer will see the Cubs’ hand specialist on Tuesday to determine next steps but he will miss at least the next 2 months.

The 31-year-old right-hander has a 5.66 ERA this season and admitted the frustration of the past couple weeks got to him. Since picking up his first MLB save on June 19, Brewer allowed 9 runs (7 earned) over his last 5 innings.

“When those things happen, you know you screwed up,” Counsell said. “And that was the conversation. There’s consequences for the mistakes you make. So it’s an unfortunate mistake and like he said, he let the emotions get the best of them. It’s not who he is, but it’s a mistake that he made. You have to move forward, past that.”

Bigge is a 26-year-old right-hander who was originally selected by the Cubs in the 12th round of the 2019 MLB Draft out of Harvard.

In 11 games with Triple-A Iowa this season, Bigge is 1-0 with a 0.77 ERA and 19 strikeouts. He has allowed only 2 hits and 6 walks in that span.

He has a big fastball that helps him rack up a bunch of strikeouts but he has had control issues at times as well, including 5.7 walks per 9 innings in the upper minors last season.

In his first go-round with Triple-A in 2023, Bigge walked 13 batters in 10.1 innings and posted an 8.71 ERA. But he has turned things around this year in a big way.

[WATCH: Scouting report on Hunter Bigge]

Bigge was a starter in college but has pitched exclusively out of the bullpen in the Cubs system.

He will provide a boost to a Cubs bullpen that needed to cover 7 innings Saturday after Kyle Hendricks was forced out of the game early with a back injury.

The Cubs also have a tough week upcoming with a doubleheader on Saturday leading into the All-Star Break.