BOULDER, Colo.—Chris Ogbonnaya’s sweet blend of speed and strength put Texas in the end zone and kept Colorado out.

Ogbonnaya scored two touchdowns and saved another in the fifth-ranked Longhorns’ 38-14 rout of the Buffaloes on Saturday night.

The oft-overlooked senior running back scored on a 65-yard dump-off and a 13-yard gallop through the befuddled Buffs’ defense, then saved a score when he chased down cornerback Jalil Brown at the Texas 16 after a rare interception of Colt McCoy, who was picked off twice.