Melbourne:
World number one Roger Federer overcame a sluggish start before advancing to the Australian Open semi-finals with a 2-6, 6-3, 6-0, 7-5 victory over in-form Russian Nikolay Davydenko on Wednesday.
In Image: Roger Federer of Switzerland celebrates after winning his quarterfinal match against Nikolay Davydenko
Text: Reuters
Images: Getty
Coverage: Australian Open 2010