LONDON • Australian Nick Kyrgios has been given a suspended 28-day ban and a US$25,000 (S$36,000) fine for the vulgar comments he directed towards Stan Wawrinka at the Rogers Cup earlier this month, the Association of Tennis Professionals said on Monday.

The ATP said the 20-year-old had been found guilty of "aggravated behaviour" during the second-round match in Montreal.

Then, his comments about Wawrinka's alleged girlfriend - teenage tennis player Donna Vekic - were picked up by microphones on the court.

"The fine and suspension are withheld on the condition that over the next six-month period, the player does not incur any fines for verbal or physical abuse at any ATP-sanctioned tournament; or does not accumulate fines totalling more than US$5,000 for any other offences at ATP-sanctioned tournaments," the governing body of men's tennis said in a statement.

Kyrgios had already been fined the on-site maximum of US$10,000 for the offence and a further US$2,500 for comments directed at a ball person.

"This incident was egregious and reflected poorly on our sport," Gayle David Bradshaw, executive vice-president, rules and competition, said in a statement.

"Nick has expressed regret, and the best result would be that he learns a lesson from this incident and that he understands he is responsible to the Tour and to fellow players for both his actions and his words.

"It is with these factors in mind I feel he should have the opportunity to 'earn' his way out of additional sanctions."

Kyrgios subsequently published an apology for the comments but last week Wawrinka said he had received no apology from the combustible Australian.

Should Kyrgios adhere to the conditions until the Feb 24, 2016 deadline, the penalties will be dismissed.

The world No. 37 is well-known for on- and off-court outbursts.

He was booed by the crowd at this year's Wimbledon for appearing to give up in a match against France's Richard Gasquet.

REUTERS