The ideal kinetic chain for tennis for a human body is rotational, not linear as commonly taught. Simple changes of motion and direction transform into force. Bruce Lee found that out for Martial Arts.
Oscar Wegner did that for tennis. Open stance and topspin are becoming the major basics of the modern game.
Furthermore, ideal footwork is noiseless gliding, not stepping hard. It is faster and you cover more ground.
Mostly overseas coaches and Richard Williams, father of Venus and Serena, applied Oscar’s teachings to then children, and history has proven Oscar right. Many of those students are the top players of today.
Go to: tennisiseasy.com
(Oscar has new programs in Clearwater, Florida, starting in June 2016)