NICK Kyrgios says he will "run through a brick wall" for Lleyton Hewitt as Australia attempts to reach its first Davis Cup final in 14 years.
The world No.20 has been hit by hip and shoulder injuries this season and suffered a first-round US Open loss to countryman John Millman.
But Kyrgios said he would be ready to give it all for his country in this week's semi-final against Belgium in Brussels, starting on Friday.
"Davis Cup for me is one of the most important events that I can play. I would love to win one," Kyrgios said ahead of Thursday's draw for the indoor claycourt tie.
"I'm just a massive fan of team sports and that's probably the closest thing we've got in tennis.
"I love getting out there with a team and getting behind everyone that I'm close with and trying to get the win for the country obviously.
"But just that whole week, building that chemistry with a team, I literally love playing for someone other than myself for once."
The 22-year-old said he had huge respect for Cup captain Hewitt, adding he would do anything for the former world No.1.
"Rusty (Hewitt) has helped me a lot. I think he's the best captain we've ever had. I know that everyone on our team would run through a brick wall for him," Kyrgios said.
"He's been an unbelievable support for me. I know there have been times this year where I wasn't doing too well mentally and he's obviously always been there.
"Davis Cup has done wonders for me this year. It's really made me find that love again for just being with the guys and having some fun, knowing that tennis isn't all bad, knowing that you can have some fun with it."
Kyrgios believes Australia has its best chance in years to win the trophy for the first time since defeating Spain in 2003.
"Our team's feeling good," he said.
"We played a great tie in Brisbane against the United States a couple of months ago and we've always been looking forward to this. We've always stayed in contact, we haven't forgotten about it.
"Just thinking about it brings me so much excitement. To take home the trophy would be probably a dream come true for me."
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