Iga Swiatek began her defense of the US Open title with a hard-fought victory over Kamilla Rakhimova, despite committing 41 unforced errors and facing set points in the second set. Jannik Sinner, embroiled in a doping controversy, is set to compete against Mackenzie McDonald after being cleared of wrongdoing regarding a positive test for a banned substance. Carlos Alcaraz, aiming for his third consecutive Grand Slam title, is also in action against Australian qualifier Li Tu. Other notable matches include Naomi Osaka facing Jelena Ostapenko and Jessica Pegula meeting Shelby Rogers in her final tournament. The day promises a thrilling lineup with several top-ranked players vying for progression in the tournament.