Roger Federer defeated Jeremy Chardy of France 7-5, 6-4 in the fourth round of the BNP Paribas Open on Wednesday and at 15-0 the worlds top-ranked mens player is off to his best start since 2006. The 36-year-old Swiss superstar can equal his season-best start of 16-0 with a win in the quarterfinals, where he will meet Chung Hyeon of South Korea in a rematch of their Australian Open semifinal.