Welcome back to the Monday Tennis Briefing, where The Athletic will explain the stories behind the stories from the past week on court. This week, a new tennis serve entered the canon, the first ...

Jannik Sinner has beaten Carlos Alcaraz 7-6 (4), 7-5 in Turin to defend his ATP Tour Finals title. This was the sixth time ...

Coco Gauff’s first match since enlisting someone to help with her shaky serving got off to a rocky start at the U.S. Open on Tuesday night. She double-faulted in the very first game — and a total of ...

Back in the day, embracing the tiebreaker to decide the outcome of sets was a heavy psychological lift for players accustomed to the traditional scoring system. In later times, Electronic Line-Calling ...