Rafael Nadal advanced to the Aussie Open semifinals for the second straight year. The Spaniard has been sort of a stealth presence in the draw, getting less attention than the (over?) hyped Andy Murray, the resurgent Roger Federer, or the much-improved Fernando Verdasco. But Nadal is the world's #1-ranked player and he may well be playing the best tennis among the male contenders right now. Should be an interesting weekend . . .