When a player plays tennis, it is useful to be able to analyse his performances, for example in order to evaluate and/or improve his playing technique. The player's level is characterised particularly by his ability to reproducibly perform gestures and shots. The better the technical control of a player, the better he will be able to perform an identical gesture whenever he wishes, particularly in training during which he applies the same type of hit for each shot.
USPTO Backgrounds
USPTO Backgrounds