I know he used to use Wilson Hyper Prostaff 6.5 with a kblade pj but now he's using Aeropro drive? and not a pj? cortex or no cortex? lead amount and locations? Anyone has full specs? What about the Wilson Kobra he was using last year, was it a pj of the ps6.5 or APD? or was it a real Kobra? I don't understand why would a top pro like himself change to a complete new racquet? I mean at least Djokovic's head is essentially the same racquet he's been using all his life. Has Tsonga always used the ps6.5 since junior years? Sorry for all the question. Appreciate any replies.