The annual "Bedlam" game lived up to its billing, with Bell leading the frantic final drive after Oklahoma State (10-2, 7-2 Big 12) had scored a touchdown with 1:46 to play to grab a 24-20 lead.
Bell needed eight plays to cover 66 yards and capped it with a 7-yard toss to Saunders in the corner of the end zone. The Sooners (10-2, 7-2) added their final points on the ensuing kickoff when Oklahoma's Eric Striker picked up the loose ball at the Cowboys' 3-yard-line and took it into the end zone.
Bell completed 10-of-16 passes for 140 yards and Brennan Clay carried 24 times for seven yards.
Clint Chelf threw for 202 yards and a touchdown for Oklahoma State. The loss denied the Cowboys the Big 12 title and an automatic BCS bid.
Ray Liotta sues skin care company over use of likeness
NBC reportedly holds celebs hostage to Jimmy Fallon's show