Colorado keeps winning, and the Buffaloes are moving up in the national rankings.

On Sunday, the undefeated Buffs jumped to No. 19 in the Associated Press poll and No. 18 in the Amway Coaches' poll. This is the first time CU has been ranked in the top 20 this early in a season since 2003.

CU (5-0, 2-0 Pac-12) defeated Arizona State, 28-21, on Saturday at Folsom Field and is one of just 11 undefeated teams in the country.

"Rankings, that's great and that's a nice note for our season, but we have one mission and that's to get to a conference championship," senior tackle Josh Kaiser said. "At the end of the day, we're still working for that and we're trying to get there."

The path to the conference title will take CU to Los Angeles on Saturday to face Southern California (3-2, 2-1), which was idle this weekend.

The Trojans were ranked No.15 in the preseason poll, but fell out of the rankings with back-to-back losses to Stanford and Texas. USC has won two in a row.

Last week, the Buffs entered the rankings at No. 21 in the AP and No. 22 in the Coaches' poll.

Contact staff writer Brian Howell at or