Hip, hip but there's no hooray for Kyrgios
TENNIS: A hip injury has cost Nick Kyrgios the chance of a fourth-round match-up with Stan Wawrinka.
The Australian was forced to quit his clash with Ukraine's Illya Marchenko with Kyrgios trailing 6-4, 4-6, 1-6.
Kyrgios had received treatment on the injury in his two previous games and it began affecting him again after he lost the second set, when once more he called for the trainer.
The Aussie continued but became more distressed in the fourth set and appeared close to tears before finally shaking hands with his opponent.
Kyrgios' defeat has denied crowds in New York what would have been a feisty affair with third seed Stan Wawrinka.
The two clashed at the 2015 Montreal Masters when Kyrgios sledged the Swiss star on court, saying fellow Australian player Thanasi Kokkinakis had slept with his girlfriend.
Wawrinka moved into the fourth round after a scare from Kyrgios' doubles partner, Britain's Daniel Evans.
Evans had a match point but Wawrinka fought back to win 4-6 6-3 6-7 7-6 6-2.
World No.2 Andy Murray was not at his best but joined fellow Brit Kyle Edmund in the last 16 with a 7-6 5-7 6-2 6-3 victory over 40th-ranked Italian Paolo Lorenzi.
Murray will now play 22nd seed Grigor Dimitrov, who defeated Joao Sousa 6-4 6-1 3-6 6-2.
Meanwhile, Serena Williams has created another milestone, with her 307 Grand Slam win.
Williams' 6-2 6-1 success over 47th-ranked Johanna Larsson of Sweden took her tally at major tournaments to 307 wins and 42 losses
She moved one victory past Martina Navratilova and tied Roger Federer among all players in the Open era. Sister Venus defeated Laura Siegemund 6-1 6-2.