Novak Djokovic uses one. So does Aryna Sabalenka. Along with the current world No.1s, many other touring pros and discerning players prefer racquets with 18x20 string patterns. The narrower string ...

A sturdier, crisper response improves stability and feel, making for an even more reliable performer.

When watching the pros at the U.S. Open hit with superhuman pace, it's natural to look for a shortcut to attain that kind of power. Most weekend hackers might focus on the racket, assuming that if ...