Serve
Space City Tennis: Probability of Winning Service
Space City Tennis has refined its Probability of Winning Service (PWS) theory over several years as an essential measurement in developing an effective, winning tennis game.
By integrating the players' first-service percentage with velocity, this innovative data point enables players and coaches to refine the most crucial stroke in the game of tennis.
We believe calculating a player's PWS is the first step in many other components defining an offensive game plan.
2025 US Open - First serve percentage
Women = 62% tournament overall
Aryna Sabalenka = 65%
Amanda Anisimova = 52%
Men = 59% tournament overall
Carlos Alcaraz = 62%, and won 83% of first serve points played.
Jannik Sinner = 54%
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