World number one Novak Djokovic continued his rich vein of form as he booked his place in the US Open's quarter-finals with a straight-sets victory over Kyle Edmund of South Africa in the men's singles event here on Monday.
The Serbian defending champion posted an emphatic 6-2,6-1,6-4 win over his South African opponent in a one-sided fourth round contest that lasted one hour and 55 minutes at Flushing Meadows.
With the win, Djokovic will now face France's Jo-Wilfried Tsonga for a place in the last four.
Meanwhile, fourth-seed Rafael Nadal suffered a huge blow as he crashed out of the fourth major of the season after going down against France's Lucas Pouille.
The 14-time Grand Slam champion suffered a 1-6, 6-2,4-6,6-3, 6-7 (6-8) defeat against the 24th seed in the last eight contest that lasted almost four hours.