As we get ready to begin the second weekend of the madness that is the NCAA Tournament, one thing is for sure: This has been an incredible tournament so far, and it's poised to get even better over the next four days.

During the first weekend, we saw millions of brackets fall well short of perfection thanks to a handful of upsets. In fact, nobody even made it to Sunday evening with their bracket still intact. But we shouldn't stop rooting for these upsets because our brackets are busted. In fact, we should be pulling for the underdogs - if everyone's bracket is bad, wouldn't you at least want to see the Davids beat the Goliaths? And if you're a big sports fan, isn't that what you love watching regardless?

I've taken a look at numberFire's awesome game simulator, ranking the eight games in order of least likely upset to most likely based on the results. Who could shock the world this week? Just take a look below.