Behren Morton drove Texas Tech 71 yards for the winning touchdown with 19 seconds left and the Red Raiders denied No. 11 Iowa State its best start in program history with a 23-22 upset.

Behren Morton threw four touchdown passes and ran 10 yards for another score as Texas Tech tied a school record with 52 points in the first half of a 66-21 victory over North Texas.

Keilan Robinson returned a kickoff 95 yards for one of his two touchdowns, Bert Auburn made five field goals and No. 7 Texas overwhelmed Texas Tech 57-7 on Friday night to reach the Big 12 championship game.

The Big 12 goes into the final weekend of the regular season with its championship game matchup still undetermined.

Gino Garcia hit a game-winning 30-yard field goal with 3 seconds to play and Texas Tech upset No. 19 Kansas 16-13 on Saturday.

Donovan Smith threw for 252 yards and a touchdown and ran for another score, and Texas Tech beat Mississippi State 34-7 in the Liberty Bowl.

Blake Shapen threw for 254 yards and two touchdowns in his first start for ninth-ranked Baylor, and the Bears still have a shot at making the Big 12 championship game.