Buzz·Updated on 13 Aug 2015Nick Kyrgios Apologizes For Telling Opponent A Teammate "Banged Their Girlfriend""Kokkinakis banged your girlfriend. Sorry I just told you that, mate."by Brad EspositoBuzzFeed News Reporter, AustraliaLinkFacebookPinterestTwitterMail Here's a video of Nick Kyrgios telling his Toronto Open opponent, Stanislas Wawrinka, that his girlfriend cheated on him with another tennis player. View this video on YouTube youtube.com It's pretty brutal. Wawrinka has recently gone through a divorce earlier this year, and it is believed he is dating Croatian player Donna Vekic. Kyrgios made the remark when he was still a set down. By Kokkinakis, Kyrgios is speaking of his teammate and fellow Australian Thanasi Kokkinakis. Whatever the case, it seemed to work – with Wawrinka retiring hurt. Following the match, Wawrinka blasted Kyrgios on Twitter. Stanislas Wawrinka @stanwawrinka So disappointing to see a fellow athlete and colleague be so disrespectful in a way I could never even imagine. 05:56 AM - 13 Aug 2015 Reply Retweet Favorite Stanislas Wawrinka @stanwawrinka What was said I wouldn't say to my worst enemy. To stop so low is not only unacceptable but also beyond belief. 05:56 AM - 13 Aug 2015 Reply Retweet Favorite Stanislas Wawrinka @stanwawrinka 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... 05:57 AM - 13 Aug 2015 Reply Retweet Favorite Stanislas Wawrinka @stanwawrinka ... for this and stands up for the integrity of this sport that we have worked so hard to build. 05:58 AM - 13 Aug 2015 Reply Retweet Favorite Kyrgios later apologized for the comment, calling it "unacceptable on many levels." View this post on Facebook Facebook: nkyrgios