$ 0 0 A brilliant Stanislas Wawrinka ended Novak Djokovic's three-year reign at Melbourne Park on Tuesday, closing out a five-set classic at a heaving Rod Laver Arena to sensationally dump the Serb from the AustralianOpen quarterfinals. Heartbroken by Djokovic in two five-set epics in Melbourne and the US Open last year, the eighth-seeded Swiss played out of his skin to upset his Grand Slam nemesis 2-6, 6-4, 6-2, 3-6, 9-7 in an exhilarating four hours. Wawrinka stayed cool in a deciding set of unrelenting tension, sealing it when the former world number one pushed a shot wide on match point. His triumph blew the tournament wide open, setting up a semi-final with Czech Tomas Berdych while snapping the Serb's 28-match winning streak. He's an amazing champion, he never gives up. I'm really, really, really happy," Wawrinka said in a courtside interview. "I was really focused point after point. I had to stay aggressive, not to give up. I was tired, I was cramping a bit, I was nervous too. But now I'm going to have an ice bath for a very long time. Last year was really tough, this year it's a new year.