Depending on results, the USA will face either Algeria or Belgium and the chances of it not being Belgium aren't as far-fetched as some are making it out to be. While Belgium will secure the top spot with any kind of result against South Korea, all it would take is for them to lose and for Algeria to beat Russia for their places to be swapped.
And as talented as Belgium may be, Algeria wouldn't necessarily be a better matchup. The Fennec Foxes absolutely steam-rolled South Korea and were on the brink of pulling a result against Belgium before a pair of late goals. They have a team full of seasoned pros who might not be household names but are absolutely capable of giving any team in the tournament trouble.
The games start 1 p.m. with Belgium-South Korea on ESPN and Russia-Algeria on ESPN2. Algeria needs a result to secure advancement as well, and all four teams are still alive.