The 17th ranked Texas Longhorns will have to go the rest of the season short one defensive back as safety Nolan Brewster is leaving football altogether.

Brewster is quitting football due to a history of concussions and post-traumatic migraine headaches that date all the way back to his high school playing days. He suffered the concussion in the Longhorns win over UCLA on September 17th.

"It's something we've been monitoring very closely," said Kenny Boyd, Texas' head athletic trainer for football. "We've talked to Nolan and his family extensively about the situation, and after a recent comprehensive evaluation, we felt it was in Nolan's best interest to no longer play football."

He had played in all three games this season for the 3-0 Horns at safety and on special teams. He is the son of former Minnesota head coach and Longhorns assistant Tim Brewster.