Over the past five years, most NCAA tourney upsets have come from three bracket lines — 4 vs. 13, 5 vs. 12 and 6 vs. 11. A 13 seed has beaten a No. 4 in five of the past six NCAA tourneys.

FILE – Bryan Zygmont works with his dog, Romey, to fill out the 2009 NCAA Tournament brackets at his Dubuque, Iowa, home Tuesday, March 17, 2009. (Jeremy Portje/Telegraph Herald via AP, File) ...

The NCAA men's tournament bracket has been announced. It's time to make your picks. Whether you're a die-hard hoops head, a casual or someone who's never watched a college basketball game, there's ...