الصوت المشترك

Coming back to the pressure index to better understand what influences these differences and what affects the level of pressure a player can produce, I conducted a multiple linear regression analysis. I tested variables such as serve speed, the outcome of the previous point, the contact location on the court, and whether Zwerev was leading in the set or match. Serve speed and contact location both show significant positive effects on the serve +1. This means that higher serve speeds and hitting