Whether you're filling out your ESPN Men's Tournament Challenge bracket or just can't get enough tourney intel, we've got plenty of historical facts and trends to get you ready for March Madness.

There are now 181 perfect brackets left following the conclusion of the first round, according to the NCAA. This is the first time since 2019 that all brackets weren't been busted in the opening round. In last year's tournament, the final perfect bracket was busted in the second-to-last game of Round 1.