Australian tennis pro Nick Kyrgios had a classic school yard insult for his opponent Stan Wawrinka during a match Thursday at the Montreal Masters -- and luckily, it was all caught on camera.
"Kokkinakis banged your girlfriend, sorry to tell you that mate," Kyrgios told the Swiss star, referring to fellow Australian player Thanasi Kokkinakis.
The woman in question is thought to be Croatian tennis player Donna Vekic, 19, ABC News reported. Vekic was rumoured to have dated Kokkinakis in 2014.
Apparently, Kyrgios went for the jugular because Wawrinka was getting "lippy."
Kyrgios on comment to Wawrinka: “he was getting lippy at me…I just said it"— Faizal Khamisa (@SNFaizalKhamisa) August 13, 2015
Kyrgios went on to beat Wawrinka 6-7, 6-3, 4-0, before the Swiss retired with an injury.
Kyrgios has been attracting headlines for his on and off court behaviour lately, and social media had plenty to say about his latest escapade -- and his hair cut.
'So, next time I run into Stan...' http://t.co/0HSgBTgE5H pic.twitter.com/4l4KRiSPpY— Tony Harper (@toneharper) August 13, 2015
Maybe Nick Kyrgios should worry less about Stan Wawrinka's girlfriend and more about his neapolitan ice cream haircut pic.twitter.com/40ZsqNkTKQ— Matthew Taylor (@MattyA_Taylor) August 13, 2015
Meanwhile, Nick Kyrgios has officially become real-life tennis Kenny Powers and I love it https://t.co/MXCW7V44Go— Pablo S. Torre (@PabloTorre) August 13, 2015
I dunno what's more offensive. Nick Kyrgios telling Wawrinka that Kokkinakis banged his girlfriend, or his haircut. pic.twitter.com/pJeKuywR2q— JΛY BUCKS (@TheMasterBucks) August 13, 2015
The more you keep on hating Nick Kyrgios, the more I like him. The best thing to happen to Aussie tennis for quite some time.— Laurence (@LaurenceRosen) August 13, 2015
It should be noted here that sledging -- trying to undermine your opponent's peace of mind with rude comments -- is a longstanding tradition for Australian sportspeople, and not anything particularly out of the ordinary.
Wawrinka did not take kindly to the insult, and used Twitter to express his extreme displeasure.
So disappointing to see a fellow athlete and colleague be so disrespectful in a way I could never even imagine.— Stanislas Wawrinka (@stanwawrinka) August 13, 2015
What was said I wouldn't say to my worst enemy. To stop so low is not only unacceptable but also beyond belief.— Stanislas Wawrinka (@stanwawrinka) August 13, 2015
There is no need for this kind of behaviour on or off the court and I hope the governing body of this sport does not stand...— Stanislas Wawrinka (@stanwawrinka) August 13, 2015
... for this and stands up for the integrity of this sport that we have worked so hard to build.— Stanislas Wawrinka (@stanwawrinka) August 13, 2015
Updated: Thursday, August 13 at 6:00 p.m. AEST with Stan Wawrinka's response on Twitter.