Indianapolis Colts middle linebacker Shaquille Leonard made his season debut Sunday against the Tennessee Titans but exited in the first half with an apparent head injury.
According to the broadcast, Leonard was bleeding after an accidental collision with teammate Zaire Franklin in the second quarter. The Titans scored on the play to take a 24-3 lead.
Members of the training staff escorted Leonard to the locker room. The team said he was being evaluated and was questionable to return.
Leonard, 27, missed the first three games after undergoing surgery for a back injury in the offseason. He had been dealing with nerve issues that caused pain in his lower extremities.
The three-time Pro Bowl selection and three-time All-Pro has piled up 538 tackles and 15 sacks in 58 games over his first four seasons. He also has 17 forced fumbles and 11 interceptions.
--Field Level Media