The Cubs lost right-handed pitcher Colton Brewer to a broken left hand. He punched a wall:

“My intention wasn’t to break my hand,” Brewer told reporters Sunday. “I’ll get frustrated and make mistakes. That’s no excuse. There’s a lot I can prove out there, that I’m willing not to do stuff like that. Emotions get the best of us sometimes.”

ESPN.com

While he punched with his left hand, it’s probably better not to punch at all.