Published on, Aug. 25 -- August 25, 2025 12:34 AM

Defending champions Jannik Sinner and Aryna Sabalenka are chasing rare repeat US Open triumphs as the final Grand Slam of the season gets under way in New York on Sunday.

Women's world number one Sabalenka opens the defense of her 2024 crown on the Billie Jean King National Tennis Center's Arthur Ashe Stadium showcourt against unseeded Swiss player Rebeka Masarova in one of the highlights of the opening day of the singles, which is being held on a Sunday for the first time in history.

Italy's world number one Sinner, meanwhile, begins his bid for back-to-back titles on Monday, when he takes on unseeded Czech Vit Kopriva. Both Sabalenka and Sinner are attempting to become the first playe...