Video: Australian Open 2014 highlights: Stanislas Wawrinka beats Novak Djokovic The Swiss eighth seed beat Djokovic 2-6, 6-4, 6-2, 3-6, 9-7 in a four-hour quarter-final on Rod Laver Arena to set up an Australian Open semi-final with Czech seventh seed Tomas Berdych. It ended a 14-match losing run against Djokovic for Wawrinka, who had gone down in two previous five-setters in majors to the Serb, at last year's Australian Open and US Open. The stunning defeat halted Djokovic's 28-match unbeaten run since the US Open final and his 25-match winning streak at the Australian Open stretching back to 2011. Djokovic also became the first defending champion to lose before the semi-finals at the Australian Open since Rafael Nadal retired injured against Andy Murray in the quarter-finals in 2009. Last year (at the Australian Open) I didn't finish it and it was really tough. But this year I came back, it's a new year and I was feeling really good," Wawrinka said. I tried everything, he's an amazing champion... I'm really, really, really, really happy. Source: AOTV/Reuters