NEW YORK (AFP) - Tokyo Olympic champions Alexander Zverev and Belinda Bencic advanced to the US Open quarter-finals on Monday (Sept 6) with straight-set triumphs.

German fourth seed Zverev stretched his win streak to 15 matches by beating Italian 13th seed Jannik Sinner 6-4, 6-4, 7-6 (9/7) and Swiss 11th seed Bencic eliminated Polish seventh seed Iga Swiatek, last year's French Open champion, 7-6 (14/12), 6-3.