Australia wary of embracing 'Nincompoop Nick' Kyrgios

SYDNEY : Nick Kyrgios's transformation from doubles entertainer to Grand Slam singles finalist is one of the more remarkable tennis stories of the year but Australian fans could be excused a little caution before embracing his Wimbledon success.

His response to Rafa Nadal withdrawing from their Wimbledon semi-final on Thursday was charged with the sort of respect that has defined the interaction between top players in this golden era of men's tennis.

"Different players, different personalities," he posted on Instagram. "I hope your recovery goes well and we all hope to see you healthy soon. Till next time ..."

Kyrgios's long track record of straying from the path of mutual respect, however, has many Down Under holding their breath and awaiting the return of what one local newspaper this week dubbed "nincompoop Nick".

From on-court meltdowns, smashed rackets, accusations of tanking and an infamous sledge of Stan Wawrinka through to his regular abuse of umpires, barely a tournament goes by without Kyrgios attracting the ire of officialdom.

Even on the march to his maiden Grand Slam singles final there have been two incidents deemed worthy of fines from the All England Club that have left some of his compatriots embarrassed, others seething.

There followed the news that he would be facing a court next month in Canberra on a charge of common assault of a former girlfriend.

'MORE MATURE'

There has never been any doubt of the 27-year-old's talent, nor shortage of theories to explain why he has never previously fulfilled it - both from the Kyrgios himself and the media which has reported on his career.

"I just feel like I'm more mature," he said after his quarter-final victory over Cristian Garín.

"I think earlier in my career if I