Here are few things to expect going into the knockout stages:
Lithuania being the number one team in Group A will take on China (#4 in group B, assuming they lose to Greece later tonight which will probably be the case) and US will probably take on Australia (Or Croatia, in the rare case that they lose today against Iran)
Quarterfinals (The eight teams to advance from round-robin play match up as follows)Which brings us to:
Game 1: Lithuania vs. Greece/China
Game 2: USA vs. Croatia/Australia
Game 3: Argentina vs. Greece/China
Game 4: Spain vs. Croatia/Australia
Semifinals (The four quarterfinal winners advance to the semifinals, where the match-ups are as follows), Again assuming there are no upsets later today...
Winner of Game 1 (Lithuania) vs. winner of Game 4 (Spain)
Winner of Game 2 (USA) vs. winner of Game 3 (Argentina)

Team - Quarters - Semis - Goldi say, yikes for Argentina, that Lithuania loss in their first game really stings them now as they have to take on Greece to advance to the medal rounds...
US - Australia - Argentina - Spain
Spain - Croatia - Lithuania - US
Lithuania - China - Spain - USA
Argentina - Greece - USA - Spain


So all in all, the pre-tourney rankings are pretty much on the button. Group A was a wild one with the surprise Croatian team even as Argentina buckled a slow start, Lithuania played like contenders...
We will see.