Indiana quarterback Michael Penix Jr. will miss the rest of the season with an injured right shoulder.
A release from IU Athletics says Penix underwent surgery Monday and was determined he will not return for the remainder of the year, including postseason.
Penix hurt the joint between the collarbone and sternum during the first half of Saturday's victory over Northwestern.
"We feel really bad for Mike," Indiana head coach Tom Allen said. "He's worked extremely hard and had a great season. He'll recover from this and get bigger and stronger this offseason. Mike has a very bright future with the Hoosiers."
Peyton Ramsey reclaims the starting job he held the last two seasons before losing the job to Penix in August.
Indiana is 6-1 this season in games where Ramsey has seen action. He has three starts and has finished four other games, helping the Hoosiers (7-2 overall, 4-2 Big Ten) post their highest victory total since 2007. Indiana has a bye this weekend.
Joe Hren contributed to this report.