NEW YORK — Jannik Sinner won his 50th match of the year on Thursday (Friday in Manila) while two-time champion Naomi Osaka's colorful return to New York ended in a dispiriting second round defeat.

World number one Sinner beat America's 49th-ranked Alex Michelsen 6-4, 6-0, 6-2 to make the last 32 for a fourth successive year.

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