When play resumed, Tulsa quarterback Cody Green tossed a short pass to Willie Carter, who caught it at about the 28, and turned upfield. He was tackled around the 17-yard line, with defensive tackle Julius Warmsley and Walker sandwiching him and apparently smashing their helmets together.
Medical personnel from both teams tended to Walker as he lay on the field. FOX Sports reported a hush went over the crowd at H.A. Chapman Stadium as Walker was attended to, and that several coaches were in tears as he was taken away in an ambulance. Spectators bowed their heads as someone on the field led the stadium in prayer.
Dr. Buddy Savoie said during a postgame news conference that Walker never completely lost consciousness and was breathing on his own.
"He was stable when we transported him," Savoie said. "I do not think, based on the information we have, his life was ever in danger."
Walker is a senior majoring in cell and molecular biology. His brother, Raynard, told The Associated Press on Saturday that their mother was watching the game on television when her son was injured.
Tulane Coach Curtis Johnson said after the 45-10 loss that while Walker was on the field, Johnson told Walker that he was praying for him and that help was on the way.
He said the mood among players was somber and called the day his most difficult ever."It was tremendous that they finished the game, as I thought about just saying `Hey look, let's not do anything else. Let's just get on the road and go.'"