Pac-12 Power Rankings: Stanford, Oregon, USC, survive upset bids

Oct 31, 2015; Salt Lake City, UT, USA; Utah Utes defensive tackle Lowell Lotulelei (93) rushes as Oregon State Beavers quarterback Nick Mitchell (14) passes the ball during the second half at Rice-Eccles Stadium. Utah won 27-12. Mandatory Credit: Russ Isabella-USA TODAY Sports

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