Oregon State's quarterback shuffle is emblematic of what has been happening around the Pac-12 all season. Injuries and inconsistency have dogged many teams in a league that has always been known for its strong quarterbacks.

The No. 15 Beavers started out the season with Sean Mannion under center. Because of injury they went to Cody Vaz. Then it was back to Mannion. This week it's undetermined.

Other Pac-12 teams that have switched quarterbacks include No. 14 Stanford, which started with Josh Nunes but swapped him for dual threat Kevin Hogan, and beleaguered Colorado, which started the season with Kansas transfer Jordan Webb but is now looking toward Connor Wood and Nick Hirschman.

Washington State has gone back and forth between Jeff Tuel and Connor Halliday. Coach Mike Leach said he plans to start Tuel on Saturday at Arizona State.

Injuries are also an issue. Cal senior Zach Maynard is nursing a sprained left knee. Arizona quarterback Matt Scott missed a game with a concussion and might not be back in time to face Utah on Saturday. The Utes are expected to start true freshman Travis Wilson, who unseated Jon Hays.

This week, as Oregon State prepares to host California, the starting quarterback is still up in the air — on both sides. If Maynard can't go, Allan Bridgford will start for Cal.

If Scott can't go for Arizona, junior-college transfer B.J. Denker will start at Utah.

Notes

• Texas A&M police said freshman wide receiver Thomas Johnson is missing. The 18-year-old was last seen leaving his residence Monday. He went to high school in Dallas, and police believe he might have traveled to that area.

• No. 7 Florida will be without quarterback Jeff Driskel (ankle) against lower-division Jacksonville State on Saturday.

• Georgia outside linebacker Chase Vasser will have surgery to repair a torn labrum in his left shoulder and miss the remainder of the season.

• The Big 12 and the Southeastern Conference agreed to a 12-year deal with ESPN for the TV rights to the Sugar Bowl. The contract is reportedly worth $80 million per year.