Coco Gauff and Taylor Fritz will spearhead the United States' title defence at the mixed teams United Cup in Australia.
Carlos Alcaraz is one win away from securing the year-ending No. 1 ranking.
Italy's Jannik Sinner got his title defence off to a solid start with a dominant straight sets win over ailing Canadian Felix Auger-Aliassime at the ATP Finals on Monday in Turin.
Taylor Fritz got his bid for a first ATP Finals crown off to the best possible start with a comprehensive 6-3, 6-4 win over home favourite Lorenzo Musetti in Turin on Monday.
Big-serving Frenchman Giovanni Mpetshi Perricard upset fourth-ranked Taylor Fritz 6-4, 7-5 and advanced to the fourth round of the Shanghai Masters on Sunday.
Carlos Alcaraz won his eighth title of a sensational season on Tuesday in Tokyo and then pulled out of the Shanghai Masters because of "physical issues".
Taylor Fritz held off Alexander Zverev 6-3, 7-6 (7/4) to seal Team World's triumph in the Laver Cup on Sunday as two wins for Carlos Alcaraz on the final day proved too little for Team Europe.
Novak Djokovic had an argument with the chair umpire during his US Open 2025 quarter-finals match against Taylor Fritz.
Novak Djokovic beat 4th seed Taylor Fritz 6-3, 7-5, 3-6, 6-4 to enter US Open 2025 semifinals.
Taylor Fritz, last year's runner-up and the only American man left in the US Open draw, raced into the quarter-finals Sunday with a straight-sets win over Tomas Machac.