MELBOURNE—Two days ago, Frances Tiafoe turned 21 years old. A glorious birthday it was: the enthused American reached his first Grand Slam quarterfinal with a mature win over veteran Grigor Dimitrov.

It looked like the 31-year-old tennis player was surprised by the superiority of Coco Gauff and some changes in her game.

Experts say hitting what’s called an inside-out forehand to an opponent’s backhand gives a player an edge. By Stuart Miller The ATP Finals in Turin, Italy, features the best men’s tennis players in ...

FLUSHING MEADOWS, N.Y. — Coco Gauff’s U.S. Open ended just as she had warned it might. On an error-strewn afternoon of struggle on her forehand, the first shot she and everyone else learned as a child ...

Logan Couillard says he lost his forehand. The Minneapolis Edison senior is the No. 2-ranked boys' tennis player in Class 1A owing to amazing hands, a lefthanded serve and an innate feel for the game, ...