Tulane safety Devon Walker was injured in the first half during Saturday's game at Tulsa and left the field in an ambulance.
According to a University of Tulsa trainer, Walker suffered a broken neck and a collapsed lung, reports Tulsa television station KTUL.
Television replays show one of Walker's teammates run into Walker as he attempted to make a tackle.
Walker stopped breathing for several minutes, had to be revived on-field and a tracheotomy was performed.
Walker laid on the turf for several minutes, paramedics put him on a stretcher and moved him into a waiting ambulance. Walker is now at St. John's Hospital in Tulsa. Tulsa was leading 35-3 at the time of the injury.
Tulane head coach Curtis Johnson told Fox Sports’ Desmond Purnell that Walker “was breathing again and he is stable.”
Walker, a senior, was playing in his 31st career game on Saturday.