Fatigue a concern for Texas defense

DALLAS -- Texas kepts itself in the game with a 60-yard touchdown run by D.J. Monroe, but through the first quarter, Oklahoma's up-tempo offense has to be wearing down the Longhorns defense.

Oklahoma has taken 33 snaps compared to Texas' seven and leads 14-7.

Texas forced Oklahoma into a turnover on downs on its third offensive possession, the Longhorns' first defensive stop of the game, but Texas could use a lengthy drive on its first of the second quarter, even if it doesn't result in points.

The Longhorns defense -- especially the secondary -- is among the best in college football. But if those players are out on the field for as long as they were in the first quarter, that performance will slide quickly, just as it did in the second half against UCLA last week.