The Pac-12 lost one of its ranks from the Associated Press Top 25 poll, with No. 25 Oregon State dropping out after its 49-46 loss to Eastern Washington. However, the conference gained a new addition in No. 20 Washington to hold steady at five ranked teams.
2. Oregon Ducks
The Ducks blasted Nicholls State 66-3 to move ahead of Ohio State. The Buckeyes didn't struggle with Buffalo so much as they failed to meet the lofty expectations placed on them before the campaign.
OSU's 40-20 victory is worth as much in the win column as Oregon's, but not worth as much to AP voters.
My Ranking in the Bleacher Report Top 25: 3
5. Stanford Cardinal
Stanford dropped one spot in the AP poll, the result of an opening week bye and voters making room for Clemson in the top four following its impressive win.
The Cardinal open 2013 against a San Jose State team that cracked the final polls of last season. The Spartans gave Stanford fits in last year's season opener.
My Ranking: 2
18. UCLA Bruins
UCLA resoundingly answered offseason questions about the strength of its run game with Johnathan Franklin gone for the NFL. Jordon James' breakout performance and a strong outing from quarterback Brett Hundley netted 58 points in an impressive rout of Nevada.
UCLA takes Week 2 off to prepare for Nebraska, a likely showdown of top 25 teams. The Cornhuskers are No. 22 in the latest poll.
My Ranking: 17
20. Washington Huskies
Perhaps the most attention-grabbing performance of Week 1 in the Pac-12 belonged to Washington. AP voters responded with the largest single-week improvement. UW received the 34th most votes in the preseason poll.
The Huskies dominated No. 19 Boise State in all phases of Saturday's 38-6 blowout. A bye week means UW is unlikely to continue its ascent up the polls next week, but another such dominant showing when it returns to action Sept. 14 against Illinois should elevate the Huskies further.
My Ranking: 20
25. USC Trojans
A stout defensive effort eventually compensated for offensive struggles in USC's 30-13 defeat of Hawaii. Voters were unimpressed with the Trojans enough to drop them one spot to the No. 25 spot Oregon State previously occupied.
My Ranking: N/R
Others Receiving Votes: Arizona State 48; Arizona 6
Kyle Kensing is the Pac-12 Lead Writer. All quotes obtained firsthand unless otherwise noted. Follow Kyle on Twitter @kensing45.