NICK KYRGIOS tossed a sports bottle onto the court and confronted fans as he finished his season in the quarterfinals of the US Open in New York.<br /><br />The Aussie was beaten 7-5, 4-6, 7-5, 6-7, 6-4 by solid Russian Karen Khachanov in an absorbing clash at Arthur Ashe Stadium.<br /><br />When he finished the match, Kyrgios broke two rackets and spat in the direction of his box; It was unacceptable behavior from a very sore loser.<br /><br />The 27-year-old was unable to back up his thrilling victory over world number one Daniil Medvedev two days earlier, as he was beaten in five sets at 1 a.m. local time on Wednesday morning.<br /><br />Kyrgios, who had a medical timeout with a suspected knee problem after losing the first set, seemed off, always fun to watch on any occasion and this was no exception.<br /><br />There was a trademark racket strike on the ground in the third set and he constantly groaned on his box at the seeming lack of support from him.<br /><br />The World No. 25 received a warning for unsportsmanlike conduct from British referee James Keothavong after he dropped a sports bottle on the ground before the start of the fourth set.<br /><br />One of the staff members had to get down on one knee and clean up the spill before the game could continue.<br /><br />And in the fourth and fifth sets, Kyrgios complained about screaming fans before he was about to serve and during rallies.<br /><br />Keothavong had to remind the audience that he respect the two players, but a few ignorant ignored his words.<br /><br />He certainly got rowdy at times, but most of the crowd wanted Kyrgios to progress.<br /><br />Over the course of three hours and 34 minutes, high-quality tennis was on display as the two players delivered 60 aces – 31 from Kyrgios and 30 from Khachanov – at breakneck speed.<br /><br />Kyrgios, who lost to Novak Djokovic in the Wimbledon final, plans to return to Australia to see his family.<br /><br />He has said this fortnight that he is unlikely to return to the ATP Tour until at least January, when he begins the countdown to the Australian Open in Melbourne.<br /><br />There is a possibility that Kyrgios could fly back to Europe in November to play his friend Thanasi Kokkinakis in doubles at the ATP Finals; they qualified due to his win at the Australian Open in January.<br /><br />And he could combine that trip with an appearance for Australia if he reaches the Davis Cup final later that month in Malaga in November.<br /><br />But for now, it looks like he'll hang up his racket for several months, return to Oz and recharge his batteries after a busy summer on grass and hard courts.<br /><br />Speaking after the loss, Kyrgios said: "Obviously I'm devastated. But all the credit goes to Karen. He's a fighter. He's a warrior."<br /><br />“I just feel like he was winning all or nothing at all. I feel like I just failed this event right now. Honestly, I don't even care about any other tournament.<br /><br />“Now to be successful at a Grand Slam, it's like no other tournament really matters.<br /><br />“I think almost every other tournament during the year is really a waste of time. You should run and perform at a Grand Sl
