Arizona's close calls to Colorado and Utah apparently cost them in the Associated Press Top 25 media poll, in which the Wildcats dropped from No. 3 to No. 4.
Arizona remained No. 3 in the ESPN/USA Today coaches poll.
Louisville (13-1), which beat Kentucky on Dec. 29, overtook UA to reach the third spot in the AP poll.
No other Pac-12 teams were ranked, though UCLA received the 30th most votes and Oregon received the 34th most.
Dana Altman said he lost his composure a bit during a fiery halftime speech that may have helped the Ducks come back to beat OSU on Sunday.
Arizona's can be found here.
Even with the loss, an optimistic Craig Robinson said this year's Beavers are the best team he's had entering Pac-12 play.
Meanwhile on Sunday, ASU had what Jordan Bachynski said was a "huge" win over Colorado in Tempe.
ASU's Carrick Felix was named the Pac-12 Player of the Week.