Karen Khachanov became the third different first-time winner of a Masters tournament this year - joining Juan Martin del Potro and John Isner.

Rafael Nadal, seeking a 4th US Open title and 18th major, will face Georgia's world number 37 Nikoloz Basilashvili for a place in the quarter-finals.

Novak Djokovic reached the Wimbledon quarter-finals for the 10th time on Monday with a 6-4, 6-2, 6-2 win over Russia's Karen Khachanov.