Great biomechanics trump great muscle. I play squash at a reasonably high level and I love examining the common biomechanical threads across different sports. I this video I talk about the principle of ‘pelvic rotation’. The ability to rotate the hips and shoulders independently – to create a hip/shoulder separation angle – is actually a key part of the kinetic chain which helps up get a lot more bang for our buck. It help us generate a lot more racket head acceleration. And that can be deployed as either power or spin. But it is best used as a combination of the two to create was in known as HEAVY BALL.