Sorry, posted this in the wrong section before; I mean 'heavy' as in Nadal's forehand is described as heavy ie. lots and lots of topspin, high loopy trajectory, high uncomfortable bounce, kicking off the court...etc... Seems to me that a lot of pro's will hit heavy forehands and very flat lightweight backhand drives. Does any pro actually hit a heavy backhand? Doesn't matter two handed or one... And what is unique/relevant about their grip/technique that enables them to do it?