Wimbledon champion Andy Murray said on Thursday that he will only compete in next year's Australian Open if he feels capable of mounting a serious challenge to win it. He is now working his way back to full fitness, but says he will not cut any corners in his preparations for the Australian Open, which begins on January 13. "I would be disappointed to miss the Australian Open because it's a Grand Slam. it's a serious thing to have done — (it is important) that you don't come back just to play a match or to the Australian Open.