Instant analysis: Texas 36, Oklahoma 20

That’s why you expect the unexpected in rivalry games. Texas arrived at the Red River Rivalry as a decided underdog and then dominated Oklahoma for a 36-20 victory at the Cotton Bowl.

It was over when: Texas defensive end Jackson Jeffcoat sacked Blake Bell on fourth-and-13 at the Texas 14 with just under six minutes left, preventing the Sooners from potentially making this a one-score game late. The Longhorns ran out the clock from there.

Game ball goes to: Case McCoy, who was more than a game manager in throwing for 190 yards with touchdowns of 59 and 38 yards. Backed by an impressive showing from his offensive line and the run game, McCoy ensured his senior class would not go 0-4 against OU.

Stat of the game: Oklahoma finished with 59 plays and 263 total yards against a Texas defense that was one of the worst in the Big 12. That unit, led by new defensive coordinator Greg Robinson, gave up 13 points with the lone touchdown coming after a 73-yard kick return. The Sooners went 2-for-13 on third down.

Unsung hero of the game: Backup running back Malcolm Brown entered the day with a disappointing 63 yards and a limited impact for Texas’ offense. He put up 120 on 23 carries against OU and gave the Longhorns a potent one-two punch with Johnathan Gray, who had 123 yards.

What Texas learned: The Longhorns just might end up being a contender in the Big 12 if they start showing up like this every week. They improved to 3-0 in conference play in a game nobody expected them to win.

What Oklahoma learned: The Sooners underestimated Texas. There will be questions this week about Blake Bell versus Trevor Knight once again after a rough showing from Bell, and the Sooners’ run defense was exposed Saturday by a more physical Texas offense.

What it means: The Big 12 race is wide open, but Baylor is now the clear favorite.