I see most games as a battle of coaching wits, which sets the tone for the game. But you still have to execute. Mental preparation, game (scheme) preparation, and execution are the three legs of the triangle IMO. The article I linked above that quoted Texas as having the #6 defense at the end of October was actually a
pre-Missouri piece interviewing Watson and a pretty good read. It was just another one of the games earlier in the year where Shawn Watson ate the opposing DC for lunch. It talks about how he did it against Oklahoma State. One week later, against a tough defense, he switched the focus from both Taylor's arms and legs and pounded it straight at them.
There are some games where you just athletically outclass the opponent, but other games where you just bring a
great gameplan and execute the hell out of it. We did that against Washington, Kansas St., Missouri, and Oklahoma State, and we did it in some very different ways. We had the gameplan part against Texas...but not the execution. We had Oklahoma early...and then completely fell apart in all three phases - mental focus, chess battle vs the OU DC, and execution.
Latter half, I really feel like being undermanned had a lot to do with it. Nagging OL injuries caught up too - Mike Caputo's injury is not really talked about, but he played through something nasty for much of the latter part of the year and we didn't have the depth behind him to replace him. Maybe there were other weird factors to explain the funk, but Watson suddenly losing half his brain cells - or half the support of the players - is one I'm not buying.
Definitely the great mystery of 2010.