10 in the group of 16:

The Americans got out of the Group of Death and are having visions of 2002. Getting to the quarterfinals again would mean beating Belgium, though, a very dynamic European foe that has yet to play its best game. Looking past that, it's likely to be Messi waiting in the wings. It's a tall task, but so was getting out of Group G.

http://www.si.com/soccer/planet-futbol/2014/06/27/world-cup-power-rankings-knockout-stage-brazil

Things can change dramatically. A red card sends a player out of the game - he cannot be replaced so the team plays one person short. An injury alters a team's composition. Best to watch Tuesday versus Belgium!