Novak Djokovic beat 84th-ranked Briton Kyle Edmund 6-2, 6-1, 6-4 to reach the US Open quarter finals on Sunday. 
Djokovic had a second-round walkover as Czech Jiri Vesely withdrew due to injury, and was leading 4-2 in his third-round match when Russian Mikhail Youzhny retired with a leg ailment making it six days since his last full match. 
After the first two lopsided sets, Edmund made the third set competitive and was on serve at 4-4 before the Serb closed out the set to end the match. 
Djokovic next will play with ninth-seeded Frenchman Jo-Wilfried Tsonga, a 6-3 6-3 6-7(7) 6-2 winner against American 26th seed Jack Sock.

Source: QNA