Stanford quarterback Josh Nunes retired from football Tuesday because of a freak injury that occurred while lifting weights.
Nunes was lifting weights during a workout in February when he felt a pop near his right shoulder.
Turns out that pop was his right chest muscle being completely torn away from his bone.
Doctors had to use screws to reattach the chest muscle and advised him to retire.
"The injury shouldn't have happened and we're not sure why it happened," Nunes' father, Tim, said. "It's not something that could've been prevented. Doctors told us it's rare for quarterbacks. Just a freak accident."
Doctors told him that if he reinjured the area, he could lose the use of his right arm.
"It's kind of a tough way to go out," Nunes told the Associated Press. "Definitely faced a lot of adversity, both with health and football. Obstacles are a part of life and definitely meant to be overcome."
Nunes was going to compete with Kevin Hogan for the starting quarterback job this season. He started seven games for the Cardinal last season before losing the starting job to Hogan.
Nunes also played for Upland High.