Arizona's loss to Oregon cost them three spots in the Associated Press Top 25, even as former unbeatens Michigan and Duke also lost.
The Wildcats were ranked No. 4 last week before losing 70-66 at Oregon. UA then beat Oregon State 80-70.
Louisville took the top spot in the poll, followed by Indiana, Duke, Kansas and Michigan. Syracuse was sixth, followed by UA, Gonzaga, Minnesota and Florida.
The Ducks, meanwhile, jumped into the poll at No. 21. It is Oregon's first appearance in the Top 25 since December 2007.
UCLA also jumped in at No. 24.
The ESPN/USA Today coaches Top 25 also put UA at No. 7 and actually had the same top eight as the AP poll. It then had Florida at No. 9 and Creighton at 10.
Kevin O'Neill is out of the Pac-12 again, having been fired at USC.
The former Arizona interim coach (2007-08), who also served as an assistant at UA under Lute Olson, was in charge of the Trojans from 2009-10 until Sunday, when the Trojans beat Utah.
USC athletic director Pat Haden issued support for O'Neill after last season because injuries hobbled the Trojans but even O'Neill said then that the Trojans would have to be in the mix to be an NCAA tournament team this season. USC is 7-10 overall and 2-2 in Pac-12 games.
KO had a rough start, taking over a team that lost Derrick Williams and MoMo Jones from their letters-of-intent when former coach Tim Floyd left the Trojans under NCAA storm clouds. During the middle of his first season, the Trojans were prohibited from postseason play because of issues relating to the O.J. Mayo situation.
Joe Pasternack is making inroads with Stanley Johnson and Gary McKnight at Mater Dei, according to a goazcats profile of the UA assistant coach.
We had a story on Grant Jerrett and Brandon Ashley today if you missed it.
Washington's C.J. Wilcox was named Pac-12 player of the week after averaging 23.5 points and 8.5 rebounds in the Huskies' Bay area sweep over the weekend.
UA had nominated Mark Lyons but, in a sense, that's what UA coach Sean Miller wanted. Miller had asked the Pac-12's Dave Hirsch not to award any of the Wildcats if they lost since it would undermine his team-success-leads-to-individual rewards belief.
Stanford is off to a 1-3 start in conference play, which Dwight Powell says is "very disappointing."
ASU's Carrick Felix was feeling the same way after the Sun Devils lost at Oregon.
Dana Altman said the Ducks were fortunate to win.