Eugene, Ore. • Kenjon Barner rushed for 104 yards and two touchdowns, and No. 2 Oregon easily took care of Colorado 70-14 on Saturday in advance of next weekend's Pac-12 showdown with 10th-ranked USC.
De'Anthony Thomas rushed for another score and added a 73-yard punt return for a touchdown before most of the Ducks' offensive starters were pulled midway through the second quarter. Redshirt freshman quarterback Marcus Mariota passed for 136 yards and two TDs.
The Ducks (8-0, 5-0 Pac-12) built a 56-0 lead by halftime, and their 70 points were the most they'd ever scored against a conference opponent. It was Oregon's 11th straight overall victory dating to a 38-35 loss at home to USC last season.
Christian Powel rushed for 127 yards and two touchdowns for the Buffaloes (1-7, 1-4), who lost their fourth straight.
The Ducks piled up 617 yards on offense, including 425 on the ground, and the Buffs simply could not keep up. Colorado went into the game ranked 112th in the nation on defense, allowing an average of 489 yards. Oregon had 447 by halftime.
Colorado has yielded at least 50 points in its last three games, including last weekend's 50-6 loss to USC.
Oregon scored twice at the start of the game on Barner's 1-yard run and Thomas' 9-yard run before Colorado's offense even got the ball. Mariota added a 5-yard scoring run then hit Bralon Addison with a 16-yard TD all before the first quarter ended.
Barner added a 24-yard scoring run before Thomas' stunning 73-yard punt return gave Oregon a 42-0 lead. Mariota found Daryle Hawkins with a 7-yard touchdown pass before leaving the game with most of Oregon's other starters.
Backup Ducks quarterback Bryan Bennett added a touchdown on a 6-yard keeper before the break, and Oregon's 56 points at halftime were its most since scoring 59 on New Mexico in 2010.