Rafa Nadal's next match with be on Mon 24th 2011 According to the AO Official Website Order of Play.
Rafa is scheduled to play Marin Cilic their head to head is 0-1 for Cilic, the last time they competed was in 2009 In Beijing on a hard court Cilic won the match 6-1, 6-3.Should be interesting.. I only hope Rafa recovers well enough to win & be his normal self on court.

Vamos Rafa!
Rod Laver Arena

7:30 PM Start
Men's Singles - 4th Round
Rafael Nadal(ESP)[1] vs. Marin Cilic(CRO)[15]