First he was the hot stuff when he burst onto the scene with back to back tournament wins. But then after his beatdown from Federer at the U.S open, people immediately dismissed him as not being capable of joining the big boy league. Recently though he managed to beat Nadal on a hardcourt and Murray on clay. But then he had his ass handed to him AGAIN by Federer. His record against the top 4 is quite bad. 0-5 vs Fed, 1-4 vs Nadal, 0-3 vs Djoker, 1-3 vs Murray. But of course, he is only 20 yrs old and we should expected his H2H to improve with age. So what do you think? JMDP capable of being in the big boy league ( i.e win multiple slams, consistently beat the top 4 ) or will he join the Roddick/Davydenko club ( super consistent players who beat everyone else but fall short when facing the big boys) or the Nalbandian/Safin/Gasquet club (super talented players who are easily capable of beating the big boys but never consistent enough) P.S - I am aware that Joker only has 1 slam and Murray has 0 but their consistent performances vs Nadal and Fed put them in the big boy league).