how diego schwartzman can improve his serve (tennis technique explained)

Find players near you at PlayYourCourt: https://playyourcourt.com/2MinuteTennis Book a Zoom tennis lesson with Ryan! Go to https://2MinuteTennis.net • TopspinPro link: https://topspinpro.com/ref/2minutetennis/ • How Diego Schwartzman Can Improve His Serve (Tennis Technique Explained) 1. Keep back foot from crossing in front 2. Toss much lower 3. Pronate • Thank you ptso ( https://youtu.be/d024vTdyQAw ), court level