Kyrgios forced out of US Open by injury

Nick Kyrgios' hopes of a maiden grand slam title have come to an end after the was forced to retire from his third-round clash with Illya Marchenko at the US Open.

The Australian was trailing 4-6, 6-4, 6-1 when he decided that he would be unable to continue due to a hip injury.

The 14th seed had looked in fine form in the opening set, but began to feel his hip at the conclusion of the opener. Kyrgios looked ready to quit when he lost the second set and left the court to take a medical timeout. However, he soldiered on, but after winning the opening game he proceeded to lose the next six and with it the set.

At 4-1 in the third Kyrgios had discussed with the trainer whether he should continue, and after losing the third set a further discussion saw him retire.

"It's tough, I don't like to retire, that is probably the second or third time I've done it," Kyrgios said after the match.

"I've got a lot of belief in my game to still win matches when I'm not feeling great but his (Marchenko's) strength is to make balls and move me around, it's not great.

"To be fair my hip was bothering me my first two matches and I got through, so I guess it was just a matter of time."