Coco Gauff fired her primary coach, and that decision is about to come under scrutiny at the US Open tennis tournament. Her new coach, Gavin MacMillan, is a biomechanics specialist Gauff is hoping can ...

Ajla Tomljanovic is in the third round of the French Open, her best Slam result. (Michel Euler/AP) Listen to Ajla Tomljanovic for 30 seconds and it's easy to Ajla Tomljanovic is in the third round of ...

NEW YORK—“Is that her?” one fan asked another as they watched a woman in a blue baseball cap hitting forehands and backhands, with metronomic persistence, on a US Open practice court this weekend.

With another grueling win at the ATX Open, Ajla Tomljanovic took a big step toward being recognized for her tennis above all else. In his on-court interview with Tomljanovic on Friday following her ...