Latest Posts

Sleep Is a Tennis Training Session The Match Begins Before the Warm-Up What Swearing Can Teach Us About Better Tennis ACES: The ATP No. 1 Club Arrived at the Worst Possible Time Principle 12: The Courage to Reverse a Call Iga Świątek’s Mini Resistance Loop Warm-Up for Tennis Tennis Beyond the Headlines: July 6, 2025

The Tennis Ball and the Metric System

This week we are moving into the Appendices of the “ITF Rules of Tennis”. It is tempting to celebrate the milestone, but we still have a long way to go. The main body of the rules concludes on page 19 as published in the USTA’s “Friend at Court.” The appendices run through page 36. The first topic on the docket as we continue to march through the rules is Appendix I, “The Ball.”