Tiger is showing the signs of an aging "slasher". His swing has never been referred to as "smooth", but he's had the physical ability to overcome most technical issues with it during the first half of his career. Now, things are different. Sure, he'll show some spurts of past greatness, but nothing like before. It's taking it's toll on his mental game as well (re: melt-down over the camera shutter noise on 18 at the end of just his 2nd round). Tiger will be mostly just a name used to draw crowds instead of being any serious threat for a major title IMO. Heck, even Jim Furyk, many years older than Tiger, remains highly competitive in nearly every major despite having the oddest looking swing on tour...... but it's smooth.
As far as the "young guns" in the hunt, I like Fowler as well. He & Rory might have quite a few duels in the future.
