Notre Dame vs Princeton: Live stream, score, live updates from March Madness Round 1

Here is everything (really!) you might want to know about March Madness — one of the biggest, most exciting and most fun events in sports. Also known as the NCAA Division I men's basketball tournament, it's been played annually since 1939.

History tells us you should pick at least two No. 1 seeds to reach the Final Four if you're looking for a cut-and-dry rule .

Here's how many college basketball upsets usually occur in the NCAA tournament — and the sure signs you've picked too many.