"I will definitely be back next year," Petty told reporters earlier this week.
The No. 9 Bears (10-1, 7-1 Big 12) lead the nation with 635.1 yards and 55.4 points per game. They close their regular season against Texas (8-3, 7-1) in Waco.
For the season, Petty has thrown for 3,557 yards. He also has rushed for 168 yards and 11 touchdowns.
Under coach Art Briles' up-tempo attack, Baylor is second to Oregon with 96 plays of 20-plus yards. No FBS team has more plays of 30-plus (53) and 40-plus yards (36) than the Bears.