London, UK, 20 June 2017 | AAP

Nick Kyrgios has vowed to be fit for Wimbledon after retiring hurt midway through his Queen’s Club first-round clash against American world No.50 Donald Young.

Serving well and returning confidently in the opening set, Kyrgios slipped and fell awkwardly at the back of the court with the scores tied at 4-4 and immediately summoned a trainer.

After taking a medical time-out for treatment to his troublesome hip, Kyrgios returned to play the next four games, but shook hands with Young after losing a the opening set tiebreak 7-3, gifting the left-hander a path to the second round.

Kyrgios said on Saturday he felt pain-free for the first time in seven months after receiving jabs in his shoulder and hip, but despite his obvious discomfort post-match was adamant he’ll be fit for Wimbledon on 3 July.

“I went to the doctors and they gave me some anti-inflammatories,” Kyrgios said.

“I’m not going to get a scan, as yet. I got the injections a couple weeks ago, and then I was in rehab for a couple of weeks. It settled down, and then on that fall I just felt sharp pain.

“I felt pretty much everything I was feeling a month ago. It’s not great at the moment. But we’ll see.”

Kyrgios maintained he’d have still pulled the pin on a searingly hot day in London, had he won the opening set, to ensure he gives himself the best chance of being fit for the All England Club.

“I mean, there are worse things in the world than a guy slipping playing tennis. I’m sure I’ll live,” he said.

“I don’t know if it felt worse (than before), but it just was a sharp pain.

“I started feeling it when I was walking, when I was landing on my serve. It’s exactly what I was feeling in Paris. I mean, it’s tough to play through.

“Obviously my main goal is to play well at Wimbledon, so I’m going to try and get it better and rehab it and hopefully it settles down.

“I’d play Wimbledon if I was injured pretty bad, anyway. I’m here … I don’t really have time to go home. I will be playing, for sure.”