Wawrinka hits back at Kyrgios after distasteful sledge

Stanislas Wawrinka has responded to Nick Kyrgios's outlandish girlfriend sledge during their match today.

Kyrgios caused a major stir at the Montreal Masters, aiming a distasteful mid-match sledge at Wawrinka.

As the above video shows, the incident occurred midway through the second set after Wawrinka had taken the first in a tie break.

"Kokkinakis banged your girlfriend. Sorry to tell you that mate," said Kyrgios, with the comment picked up by a courtside microphone.

30-year-old Wawrinka divorced his wife Ilham earlier this year and has reportedly been dating 19-year-old fellow tennis player Donna Vekic since June.

Vekic at the French Open. Image: Getty
Vekic at the French Open. Image: Getty

The stunning blonde Croatian has been seen sitting in his player's box during recent tournaments.

Vekic cheers on Stan at Wimbledon. Image: Getty
Vekic cheers on Stan at Wimbledon. Image: Getty

Wawrinka made his response via Twitter saying what Kyrgios said he wouldn't even mutter to his worst enemy. He also said he hoped the governing body would take a stand against the wilful Australian.

Kyrgios went on to win the second-round match 6-7 (8-10) 6-3 4-0 after Wawrinka retired due to a back injury in the deciding set.

When asked afterwards why he made the comment, Kyrgios replied: "He was getting a bit lippy with me.

"Kind of in the heat of the moment. I don't know. I just said it.

The jibe sparked a major frenzy on social media:

Kyrios' mother Nill recently revealed the 20-year-old will be mentored by Lleyton Hewitt in the lead-up to next month's US Open.

Looks like Llyeton has his work cut out for him.

The Aussie firebrand has drawn the ire of tennis officialdom several times in his short career.

Take a look at some of his best work: