NEW YORK (Reuters) - Alexander Zverev eased past Jannik Sinner 6-4 6-4 7-6(7) and into the quarter-finals of the U.S. Open on Monday as the fourth-seeded German extended his winning run to 15 matches.

Enjoying a summer to remember, Zverev might have difficulty recalling the last time he lost a match after tapping into a run of form that has carried him to Olympic gold in Tokyo, a Masters 1000 win in Cincinnati and the last eight at Flushing Meadows.