The only overgrip that I can play with that doesnt make my hand slip at all is Super Grab and Pro Overgrip. Why is that? When I am trying my friends racket that has a Tournagrip on the handle my hand slips like HELL! I have to hold the racket so tight and hard that I am getting serious cramp. Why cant I play with Tournagrip? Is my hand dry or anything? Share your knowledge!