NEW YORK, Sept. 2 (Xinhua) -- Following are the men's singles fourth round results of the US Open on Monday (prefix number denotes seeding):

13-Gael Monfils, France, bt Pablo Andujar, Spain, 6-1, 6-2, 6-2

2-Rafael Nadal, Spain, bt 22-Marin Cilic, Croatia, 6-3, 3-6, 6-1, 6-2

20-Diego Schwartzman, Argentina, bt 6-Alexander Zverev, Germany, 3-6, 6-2, 6-4, 6-3

24-Matteo Berrettini, Italy, bt Andrey Rublev, Russia, 6-1, 6-4, 7-6 (6)

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