•  What about Roger Federer, many of you wondered. Fair point. He's shown a lot lately -- most obviously his first, fifth and seventh matches in Australia -- and you don't win 16 majors relying exclusively on physical talent. Still, I don't think of him as an "assassin" or "killer" on the court. Maybe it's the curse of having it come relatively easy, but I still don't put him in Rafael Nadal's league in terms of pure mental impenetrability.