The first round of the 2025 US Open wraps up on this Day 3 of main draw play, with five former Flushing champs headlining the day’s play. Men’s defending champ Jannik Sinner, 2022 women’s winner Iga Swiatek, 2023 titlist Coco Gauff, 2014 champion Marin Cilic and two-time first-place finisher Naomi Osaka (2018, 2020) all have court time booked today.