ESPN News Services
Bosa was sitting on the turf with his helmet off at the end of a play after rushing after TCU quarterback Shawn Robinson early in the third quarter. Bosa lay down when medical trainers came out to check on him, and they looked at him momentarily before the All-America player got up and walked slowly to the bench. A few minutes later, he left the field and went to the Ohio State locker room.
On television replay, Bosa could be seen motioning to his left groin area while sitting on the ground before trainers got to him.
Bosa returned to the Ohio State bench in street clothes before the end of the third quarter, walking very gingerly.
Ohio State interim coach Ryan Day said after the game that Bosa was still being evaluated and had no definitive update.
In the first quarter, Bosa sacked Robinson and caused a fumble in the end zone that was recovered by Davon Hamilton for a Buckeyes touchdown.
ESPN’s Adam Rittenberg and The Associated Press contributed to this report.