Marchenko advances as Kyrgios retires with hip injury at US Open

Australia’s Nick Kyrgios, the No. 14 seed, was forced to withdraw from his thirdround match at the US Open with Ukraine’s Illya Marchenko due to a hip injury.

The 21yearold Kyrgios, one of the rising stars on the ATP Tour, decided to retire at the start of the fourth set on Saturday night.

Marchenko was leading 46, 64, 61 when the Australian’s right hip injury worsened.

“Not the way I wanted to end the last grand slam of the year. Fking sucks,” Kyrgios said in a Twitter post after the match.

In other men’s action, Switzerland’s Stan Wawrinka, the No. 3 seed, saved a match point against Britain’s Daniel Evans and pulled off the win 46, 63, 67 (68), 76 (86), 62 in a fourhour match on the court at Louis Armstrong Stadium.

Britain’s Andy Murray, the Olympic gold medalist, struggled against Italy’s Paolo Lorenzi, but finally prevailed 76 (74), 57, 62, 63 in a match that lasted three hours and 20 minutes.

Japan’s Kei Nishikori, the No. 6 seed, rallied to beat French world No. 42 Nicolas Mahut 46, 61, 62, 62.

Argentina’s Juan Martin del Potro, the 2009 US Open champion, knocked off Spain’s David Ferrer, the No. 11 seed, 76 (73), 62, 63.

The 27yearold Del Potro will play Austria’s Dominic Thiem, who beat Spain’s Pablo Carreño 16, 64, 64, 75, in the round of 16.

Del Potro, who received a wildcard into the last Grand Slam event of the year, won the silver medal at the Summer Olympics last month.