I was going to write this in the Mayweather/Pacquiao thread but forgot so I'll just write it here.
There's some irony to the fact that Pacquiao and Tiger's game respectively has dropped in the last few years. When Pacquiao was cheating on his wife, drinking, gambling, etc. he was destroying every opponent in the ring. It's only in the last 2-3 years when he became a converted Born-Again Christian that he started slowing down and dominating less.
The same for Tiger. When he was cheating on his wife with 50 mistresses, guy was winning tournaments and winning majors. After he got caught, had to deal with the stress of the public image, etc. his game dropped off. He's seemed to hit a huge mental block since then on the golf course, not converting shots he was sinking with ease years ago.
Now I'm not endorsing they gotback to those lifestyles, Tiger probably can since he "broke-up" with Lindsay, but both athletes had a certain edge to them. Guys like them who are in physical peak shape in their respective sports must have testosterone through the roof. Even some of the media darlings who we perceive as good guys like Steve Nash have been caught cheating on their wives too.
Pac Man is past his prime and has slowed down.
Tiger is off the juice.
That explains it better than their sex lives.