As some of you said, yes his racquet (now and before) is 18x20, the nPro Surge is 16x19, if you think a little it is impossible for someone like him to use the nPro Surge, he would make holes in the back fence.
I am sick about how the companies and the pros try to cheat all of us and it is our fault to let them do that and to not be smart enough to be able to tell that they don't use what we buy.
If you go to Wilson's web site you'll see in the K Six-One 95 that they put all the pros in the 16x18 model jajajaja anybody who can count will see all those pros use 18x20 model
Please people don't let them cheat on you!!!!!!!!!
I even wrote wilson about this but they never answered me.. of course they won't, they have no answer.
It's not only wilson, all the companies do the same, come on let's begin to be smarter and buy what we think is better for us, not what we see a pro uses.
Edit: I am not saying that asking what racquet a pro uses means that you want to buy that racquet or that you are a fool for asking it, I wonder my self a lot of times what racquet the pros use or how the set it up, it's just that this matter makes me go insane!!