George:
Good question -- my thought is that the set-up at Olympic wasn't great for Tiger in terms of where his game is right now. When it's under control, he's as good as anyone out there -- thus tied for the lead halfway through the Open. But Olympic appeared to be a course (and appropriately so, in my view, for this championship) that was quite penal with slight misses or miscalculations, and those are still part of Tiger's game. He's simply not as consistent, in all facets of his game, as he has been in the past. I think he can get away with that at some courses, that are more conducive to recovery shots and where he has the ability to make up ground after a bad run of holes. Olympic in particular seemed to be a pretty long grind, and rewarded consistent play without those penalizing miss-hits.
To me, the tournament turned on three shots -- Furyk's tee shot (a really bad miss severely penalized, not unlike Mickelson at 18 at WFoot); Els' approach to a somewhat sucker pin on 16 that he chased, and just missed, sending his ball into the run-off area; and Simpson's 3rd shot at 18 from a bad lie around the green. Two of those shots resulted in bogey; one in a par, and the par essentially won the tournament.
Tiger was pretty much undone by his play at Olympic's very tough opening of six holes -- E the first two days, +9 on the weekend. Simpson played the first 6 holes +4 on Th/Fri, then E par on the weekend. In short, Simpson avoided during that crucial stretch of holes what Tiger encountered. To me, Tiger looked like he "thought" his way around the course extremely well the first two days, but didn't execute his way around the course on the weekend. That's the mark, to me, of an inconsistent player who doesn't quite have his game back yet.