Jannik Sinner believes he and Carlos Alcaraz will "have to improve" if they want to stay ahead of their ATP Tour competitors.

If you would like to follow The Athletic’s U.S. Open coverage, click here and follow our tennis page. Will world No. 1 Aryna ...

Meanwhile, Aryna Sabalenka is a brilliant 67-13 on the season but has fallen short late in all three Slams and must fend off ...