MELBOURNE, Australia (AP) — Roger Federer prefers to think of Rafael Nadal or Novak Djokovic as the favorites for the Australian Open title, despite entering as defending champion and coming off a worry-free preparation. "I play down my chances just because I don't think a 36-year-old should be a favorite of a tournament," Federer said Sunday on the eve of the year's first Grand Slam tournament, "It should not be the case. "That's why I see things more relaxed, you know, at a later stage of my career." The 19-time major winner can afford to relax slightly longer, given the half of the draw that he shares with Djokovic doesn't start until day two.