The Kick Serve

The kick serve is the high-bouncing, heavy-topspin serve that's the gold-standard SECOND serve — it clears the net with margin (safe) and then jumps up and away off the bounce (nasty). The recipe: a toss slightly BEHIND your head and to your non-dominant side, deep knee load, and a brushing UP-and-across swing…

FilmableFilm this on your phone and TrueForm measures your body mechanics and tells you what to fix. You get angles, not a made-up score.