Nick Kyrgios, 20, will undergo a number of hip and back scans which will determine his fitness ahead of the Davis Cup tie against the United States

Australia Await Nick Kyrgios' Injury Update

Nick Kyrgios is set to undergo examinations on a hip and back injury he picked up against Stan Wawrinka. He retired 6-3, 3-0 down in his semifinal match against Wawrinka in Dubai.

It is understood that the hip and back injury could both be related. 

News of Kyrgios’ injury woes contrasted vividly with Australian spearhead Bernard Tomic’s advance to the Acapulco final and had the chance to claim a career-high ranking of world number 15. He was beaten 7-6 (6), 4-6, 6-3 by Austrian Dominic Thiem, who picked up his fifth ATP World Tour title at the age of 22. 

Nick is expected to face John Isner in the opening rubber of the Davis Cup tie, while Tomic is to face Jack Sock.

Nick Kyrgios could be replaced by Sam Groth for the opening or reverse singles if his injury is deemed worse than expected. 

Fatigue Ahead of Davis Cup Tie 

Nick Kyrgios, admitted to be struggling on a number of levels in Dubai after defeating Marin Cilic to win his first ATP World Tour final in Marseille.

Speaking to Perth Now the Australian said, “It was a bit of a struggle, to be honest. I have been feeling so bad every day, like I’ve got some viral infection as well.”

Nick Kyrgios had the trainer on court during the first set against Wawrinka to try and manipulate his right hip, where he sustained one of his injuries.

"I couldn’t really serve anywhere near my full capacity today,” Kyrgios said. “He (Wawrinka) was playing great, anyway. He was playing really aggressive off the second shot of his serve.”

Before the match, Kyrgios conceded the past two tournaments had drained him, but vowed to be ready for Davis Cup.

“100 per cent I will be tired,” he said. “I’m only human. You know I’m going to be tired, but no matter what, if I’m going to play (Davis Cup), I’m going to, you know, do my best.”