On offense I don't think BYU will be able to run the ball effectively and I don't trust ARod not to try and force it resulting in several wasted possessions. Add in a few turnovers and I don't see BYU scoring a lot of points. I expect an offensive performance similar to what we had vs SMU and it's not a great strategy to need your defense to keep a team out of the endzone to hope for a win against quality competition.
On defense, I was not impressed with the performance against Wyoming. Perhaps they were just playing a very vanilla scheme because they could but they weren't getting pressure like they did vs SMU and the short passes to the flat were open all game. It also seems that our kryptonite so far this year is a scrambling QB and Kansas State may have one of the best dual threat QBs in the country. There has been some great improvement with the defense this year but last week looked like a regression to previous years (and Wyoming just wasn't good enough to do anything about it).
In our favor is a home game at night with some momentum from a 3-0 start including three better than expected performances (at least beating the spread).
I'm thinking something like a 24-14 type game for Kansas State.