Djokovic advances after Youzhny retires

Novak Djokovic advanced to the fourth round of the US Open on Friday after Mikhail Youzhny succumbed to a hamstring injury midway through the first set. 

This marks the second consecutive round that Djokovic has advanced after his opponent has suffered an injury as in the second round, the world number one didn’t have to take to the court as Jiri Vesely withdrew due to left arm inflammation.

Djokovic enjoyed early success in the first set as he broke Youzhny in the second game to take a 3-0 lead. The Russian claimed the fourth game to make it 3-1, but called for the trainer afterwards and had his left upper leg strapped. Youzhny continued on, but the injury proved to be too much for him to continue and he called it quits with the score at 4-2.

The Serb was only on the court for 30 minutes and will have more time to recuperate from the wrist injury he had been nursing at the start of the grand slam.

Djokovic will either face Kyle Edmund or 20th seed John Isner in the round of 16.

Meanwhile, seventh seed Marin Cilic crashed out of the tournament after suffering a shock 4-6, 3-6, 3-6 defeat at the hands of 26th seed Jack Sock.

The 2014 US Open champion, who was facing Sock for the first time, was broken four times in his straight sets loss and committed 21 unforced errors. He was also unable to win any break points.

Sock, who won 86 per cent of points on his first serve, will take on ninth seed Jo-Wilfried Tsonga in the fourth round after the Frenchman beat Kevin Anderson 6-3, 6-4, 7-6 (4).

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