[Goose]

AZST goes to Rose Bowl. 
Their game vs UTAH looks to be best game next week.

Best and certainly the most important. If AZST wins they really do have the inside track in the South, and if Utah wins, they only sort of have it. USC has already lost too many conference games to really have any shot. UCLA has lost 1 conference game, so they are still in it, but it is hard to see them beating Utah at this point. The game is at Utah. Arizona and Colorado are terrible, so they aren't in it at all. The interesting outcome would be Utah beating ARST and losing to UCLA.  Both Utah and UCLA play Oregon, AZST does not.
I expect that if AZST beats Utah, the South is over. If they don't, they then need Utah to lose two conference games. Oregon is possibly one. Hopefully Stanford is also one!

[Goose]

AZST goes to Rose Bowl. 
Their game vs UTAH looks to be best game next week.

Best and certainly the most important. If AZST wins they really do have the inside track in the South, and if Utah wins, they only sort of have it. USC has already lost too many conference games to really have any shot. UCLA has lost 1 conference game, so they are still in it, but it is hard to see them beating Utah at this point. The game is at Utah. Arizona and Colorado are terrible, so they aren't in it at all. The interesting outcome would be Utah beating ARST and losing to UCLA.  Both Utah and UCLA play Oregon, AZST does not.
I expect that if AZST beats Utah, the South is over. If they don't, they then need Utah to lose two conference games. Oregon is possibly one. Hopefully Stanford is also one!