The debate around what it would take to have a perfect March Madness bracket surfaces annually this time of year. The odds of someone accurately predicting the outcome of all 63 games of the NCAA Division I men’s basketball tournament are about 9.

Here's the latest projected March Madness bracket, including No. 1 seeds, the last four teams in and the first four out of the NCAA Tournament

According to the NCAA, the odds of a perfect bracket increase, in theory, to about 1 in 120 billion if you apply logic. That includes picking favorites. The closest known attempt was a bracket that remained perfect through the first 49 games in 2019. It was a remarkable bracket, but it was still light years away from perfection.