How can something so beautiful to watch, a stroke so etched into tennis history, be so exploitable — and why have a dwindling handful of players remained loyal to it? By Matthew Futterman Reporting ...

As Stefanos Tsitsipas loads up and uncoils into a full-swing, his broad shoulders rotate and in a blink, the racquet violently explodes into the ball. His right arm continues carving an arc, a ...