Things to watch this week in the Big 12 Conference:

Game of the week

No. 18 BYU (5-0, 2-0) at Arizona (4-1, 1-1), Saturday, 8 p.m. ET (ESPN2)

The Cougars are 5-0 for the second year in a row, and fourth time in six seasons under coach Kalani Sitake. BYU's 9-0 start last year included a 41-19 win over Arizona . BYU freshman quarterback Bear Bachmeier has seven TDs and only one interception while completing 79 of 115 passes (68.7%). He threw for 351 yards and ran for 43 last week against West Virginia.

Arizona is the nation's only team that hasn't allowed a passing touchdown and tops the Big 12 allowing 736 yards passing, one yard fewer than BYU. Noah Fifita has 13 TDs and three interceptions. The Wildcats have already matched their overall win total from last year’s disappointing Bi

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