![epa06456672 Roger Federer of Switzerland in action during his third round match against Richard Gasquet of France at the Australian Open Grand Slam tennis tournament in Melbourne, Australia, 20 January 2018. EPA/MAST IRHAM](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/3MRF72JGSJNUEIHCKU5JMVMIYM.jpg?smart=true&auth=f80a95c72127330551dc51ca233fff52ef3a8dfebe821c67c68bb4d4523e111c&width=400&height=225)
Roger Federer has been in excellent form at the Australian Open so far. Irham Mast / EPA
Roger Federer has been in excellent form at the Australian Open so far. Irham Mast / EPA
Australian Open Day 6: Federer and Djokovic win after Berdych upsets Del Potro
German Zverev beaten in five sets by South Korea's Chung, and Thiem progresses to fourth round