March Madness bracket ruined? You're not alone

March Madness has already lived up to its name.

Several upsets in Thursday and Friday's NCAA men's basketball tournament games wreaked havoc on brackets. After 15-seed Middle Tennessee State's shocking win over Michigan State and Iowa's win over Temple University, just three brackets of the roughly 13 million submitted remained perfect in ESPN's Tournament Challenge.

No, really, just three.

About 0.1 percent of the entries at were unblemished as of Friday morning, but Middle Tennessee State's victory likely ruined many of those.

CBS declined to say how many brackets were submitted.

An aerial view of the North Carolina Tar Heels v Florida Gulf Coast Eagles first round of the NCAA Mens Basketball Tournament.
Streeter Lecka | Getty Images

Bracket pickers at ESPN actually fared better with Thursday games this year than they did last year. Only 0.002 percent of brackets were perfect at the end of the Thursday games in 2015, ESPN spokesman Kevin Ota said.

Multiple underdogs won in a flurry of games Thursday. Yale and Arkansas-Little Rock, both 12 seeds, topped Baylor and Purdue, respectively.

Gonzaga and Wichita State, both 11 seeds, also advanced.

On Friday, tenth-seeded Syracuse and Virginia Commonwealth won.