Tournament favorite Brazil has already clinched a spot in the second round and most likely first place in Group F, barring some miracles. The other three teams all have a chance at the #2 spot. In decreasing order of likelihood, they are Australia, Croatia, and Japan.
Australia beat Japan, 3-1 in its first match with three late goals. And the Socceroos didn't look too bad against Brazil in a 2-0 loss.
Croatia, aka Team Tablecloth, hasn't scored yet, but at least got a point from a draw with Japan.
Japan, after its collapse against Australia, managed a tie thanks to a PK save by keeper Yoshikatsu Kawaguchi.
Australia advances with a win or tie against Croatia. Japan would have to beat Brazil and hope that Australia doesn't win and that they overcome the goal difference. (Australia is at 0, Croatia at -1, and Japan is at -2).
Three playes on the Croatian team were born in Australia. And seven members of the Australian team are Croatian to some extent. So for a 1/4 Croatian guy like me, I can't lose! (Just to cover all my bases, I have a sister-in-law who is Japanese!)