When you look at Sampras's game, serve and volley for the majority though early on he stayed back, it's not very taxing on the body. I think that shows in his domination of the game for roughly a decade. But then towards the turn of the century, he started to lose more and people started saying he was on the downside. So why do you guys think Sampras's career declined? My own theory is that he had nothing left to prove after breaking the all time grand slam list + tired of the life + slowing of the courts which resulted in baseliners being able to return his serve more and pass him more frequently as well as his volleys losing just a bit of sting on the slower court. just thought of this one: with pete breaking the rec, i believe he also slacked off in terms of improving his game. ive seen a few of his matches and except for very early pete, pete's game that kept him number 1 six years is pretty much the pete we saw at the end minus the conditioning. so in short the game also started to pass him by since he was coasting. he didnt improve his backhand and then his volleys started to go...in contrast, look at federer who used to have an attackable backhand but now is almost as good as his forehand and his net game is even better than a couple years ago. i think that shows how effectively one-sided and good pete's game was in order for him to win all those years.