Davis Cup captain Wally Masur says Nick Kyrgios is Australia’s spearhead, not a potential problem for this week’s quarter-final tie against Kazakhstan in Darwin.

When Kyrgios was asked at a team media conference on Tuesday whether his recent controversies at Wimbledon and since could make him a liability for the Australian team, Masur jumped in, calling the situation in London “unfortunate”.

“Nick a liability for the Davis Cup? Absolutely not,” Masur said.

“He’s here, he’s got the green and gold on, he’s one hell of a tennis player. That doesn’t make him a liability, it actually makes him the spearhead.”