Rickson
G.O.A.T.
I see most of my tennis buddies hitting flat footed on their serves and I tell them to get on the balls of their feet, but they just can't seem to do it. Is getting on the balls of the feet absolutely necessary for an effective serve or have there been pros who got away with flat footed serves? I always get on the balls of my feet, but my buddies seem helpless so can they work the serve without changing their foot form?