In these observations, we see that the top players open their hips early – and before the foot touches down. This allows them to start faster in the direction.

Here we see an example of the maestro’s creativity. His drop shot has a high trajectory, but drops quickly after hitting the net and bounces away to the outside via the side spin. 

Safety over the spin shows this measurement. Between the first ball impact and the second ball impact there is a distance of more than 13 meters.

Rally at the Madrid Open, with the players Kyrgios and Nishikori. We measured the height of the ball (net height and distance to the ground).