World number one Jannik Sinner acknowledged a cooler reception from fellow players at the US Open following his recent controversy over failed anti-doping tests, from which he was cleared of fault by an independent tribunal. In his first match since the incident, Sinner defeated Mackenzie McDonald after initially losing the first set, securing a 2-6 6-2 6-1 6-2 victory. While he expressed gratitude for the positive fan support, he admitted that reactions in the locker room have been mixed and he cannot control players' opinions. Former champion Daniil Medvedev commented on the situation, emphasizing the need for fair treatment in doping cases. Other notable matches included Stefanos Tsitsipas's early exit and Carlos Alcaraz's four-set victory. Sinner's performance and the surrounding drama continue to be key talking points of the tournament.