Djokovic and Swiatek through at US Open as Tsitsipas and Miyazaki depart

Novak Djokovic stretches on his way to a 6-4, 6-1, 6-1 victory over Bernabé Zapata Miralles in the second round. Photograph: Cj Gunther/EPA

Novak Djokovic strolled into the third round of the US Open, completing a 6-4, 6-1, 6-1 victory against Bernabé Zapata Miralles of Spain. As the second seed advanced, another of the few true potential threats in his half was removed. Stefanos Tsitsipas, the seventh seed, was beaten 7-5, 6‑7 (2), 6-7 (5), 7-6 (6), 6-3 by Dominic Stricker of Switzerland.

Tsitsipas’s exit is the second significant defeat in the bottom half after Holger Rune, the fourth seed, fell to Roberto Carballes Baena in the opening round. Afterwards, Tsitsipas denied his result had anything to do with the recent changes to his team. He is in New York with Mark Philippoussis as his head coach as his father remains at home.