I love rooting for Phil, and I really want him to win today, so what I'm about to say doesn't come from any anti-Phil bias I might have...but he is hitting the ball SO far off the tee this week, would it shock you to discover after the fact that he's been taking steroids or HGH or the equivalent? I'm getting some McGwire/Sosa vibes that this could be a feel-good story that's just too good to be true. (He's hitting it super-straight by his standards as well, of course, so it's not just a distance thing - but the distance is itself kind of shocking relative to the young bucks in the field.)
The PGA is weird. He might just be the type of guy to win it.
My theory about the PGA Championship is that every year, the PGA has the highest-quality field in golf bar none - even factoring in the 20 club pros and some past champions who have little or no chance of winning, the rest of the field is basically the best 120 players in the world, with no qualifiers as such (like the US Open and the Open Championship) and a full-size field (unlike the Masters). But because the margin between #1 and #120 is so small in golf relative to other sports, that means more really good golfers get the chance to have one really good week and become the next Shaun Micheel than is the case in other majors. There are always relative outsiders like Trevor Immelman and Ben Curtis who win at Augusta or the Open, of course, but there are more relative outsiders who are capable of winning in any given PGA, which is why more relative outsiders do win the PGA.
In that context, it'd be interesting to quantify how small the field in a major would have to be to have a tournament in which literally nobody could be a surprise winner. You'd probably have to narrow the criteria down to something like a) golfers who have already won at least 2 majors in the past 20 years, b) golfers who have won at least 10 PGA plus European Tour events (with each European Tour event counting as 2/3 of a win) in the past 10 years, and c) the Top X in the Official World Golf Rankings, but "X" would have to be a much smaller number than you think considering that a golfer like Harris English is currently #22 in the rankings, and he would definitely be a surprise major winner at this point. I do think it'd be awesome to watch a major like this with only 40 or so players in the field, although I'm probably in the minority about that.