3 up, 3 down: USC 47, Colorado 29

LOS ANGELES – A look at the positives and negatives from USC’s 47-29 victory over Colorado on Saturday.

Three up

1. USC first-team defense

Spearheaded by another strong effort by the front seven, the Trojans' defensive starters completely stymied the Buffaloes. In fact, Colorado’s offense failed to put up any points against USC when the entire first-team defense was on the field. Clancy Pendergast’s group was particularly impressive in the first half, allowing just 30 yards on the ground, while also limiting Sefo Liufau to 43 yards on 4-of-15 passing, a fumble and an interception. Cornerback Josh Shaw also did quite a job on Buffaloes star wide out Paul Richardson, holding him without a catch until midway through the third quarter.

2. Javorius Allen

Allen continued his string of outstanding play, running for a career-best 145 yards to go along with three touchdowns -- despite missing some time in the first half with a shoulder injury. He compiled 112 of his rushing yards in the second half, and the third-year sophomore tailback appeared to grow stronger and more determined following his fumble to open the third quarter. He deserves a ton of praise for the resiliency he showed. His three rushing touchdowns gives him a total of nine in the past four games.

3. Soma Vainuku

Another player who has really come on as of late, Vainuku had arguably his best game as a Trojan on Saturday. Making a name for himself as a special teams demon this fall, the physical fullback blocked a Darragh O’Neill punt in the first quarter, and the ball flew out of the end zone for a USC safety. It was Vainuku’s third blocked punt of the season. But it was on offense where the Eureka (Calif.) native made perhaps his biggest mark against the Buffaloes. Entering the game without a single carry to his credit in 2013, he exploded for 70 yards on 5 rushing attempts, with his 52-yard touchdown jaunt clinching the game for the Trojans.

Three down

1. USC first-half rushing offense

Amassing just 37 rushing yards in the first half, the Trojans offensive line struggled early and the USC tailbacks couldn’t do much of anything on the ground against Colorado. That was a surprise considering the Buffaloes entered the game ranked No. 103 in the FBS against the run (210.4 yards allowed per game). To the credit of the USC offensive line, however, they did come back with a much better performance in the second half, opening lanes and allowing Allen and Co. to get rolling. The Trojans finished with a more-than-respectable 243 rushing yards.

2. USC second-half defensive lapse

With the Trojans leading 37-7 late in the third quarter, interim coach Ed Orgeron opted to bring in the reserves, and Colorado's offense really got going for the first time all night. Without a significant push up front by the Trojans, Liufau had plenty of time to throw downfield and the Buffaloes offense put 22 points in the fourth quarter. Cutting the USC lead to 11 points with just over three minutes remaining in the contest, Colorado’s comeback bid ultimately ended when Will Oliver’s onside kick was recovered by Leon McQuay III.

3. USC punting

USC punter Kris Albarado has had some big outings this season, but Saturday's matchup wasn’t one of them. Averaging just 30.2 yards on six punts, he was noticeably off from the start of this game. His 17-yard boot in the fourth quarter was the low point of his night, with Colorado quickly converting the mistake into its final touchdown.