Some madness finally came to the 2017 men’s NCAA Tournament over the weekend, as overall No. 1 seed Villanova and No. 2 seeds Duke and Louisville fell. In the video above, FiveThirtyEight sports editor Chadwick Matlin looks at how the surprising wins by Wisconsin, South Carolina and Michigan affected the rest of the field.
Chadwick Matlin is a senior editor at FiveThirtyEight. @ChadwickMatlin