Mateer has been the engine behind Oklahoma’s early success, throwing for more than 1,200 yards and six touchdowns through four games while adding another four scores on the ground. His ability to extend plays and keep defenses off balance made him one of the most talked-about players in college football, even drawing early Heisman Trophy buzz. Losing him at this stage is a major setback, especially with conference play heating up and the Red River Rivalry looming on the schedule.