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What Are Your Chances of Creating Perfect NCAA Tournament Bracket?

Tom Holmoe
NCAA Basketball Tournament Selection Committee Meets In Manhattan | Drew Angerer/Getty Images

The odds of putting together a perfect NCAA Tournament bracket are not in your favor. One in 9,223,372,036,854,775,808 is a losing proposition. Those, per a Duke University researcher, are the odds of randomly going 63-for-63 in your selections. There is some good news, though, as factoring in actual college basketball knowledge may improve your chances to a cool one-in-128 billion.

And yet the human condition dares us to dream. To fill out sheet after sheet hoping to not only win the pool, but defy the odds and achieve immortality.

So many have tried before. No one has even come close since the format changed to include 64 teams in 1985.

For a long time, the standard-bearer for staying flawless was 36 selections, barely past halfway through the tournament.

The longest one has ever stayed perfect is 49 games and it happened last year, far surpassing the then-record of 37. Such an insane jump could happen again, but would still be two short of the 63-for-63 mark.

Something to keep in mind when various platforms start offering $1 million prize for a perfect bracket? They aren't sweating it. Consider this: if everyone in America filled out a bracket -- children included -- there would still only be a 1-in-400 chance that someone would nail each and every selection.

Ok, so we've established that the immaculate bracket will likely never happen in reality. But what if we, hypothetically, had a 90 percent chance of picking each individual game correctly? The probability, then, of going unblemished is .00153 percent. Even if, through some magic, we had 99 percent certainty of each contest, the odds of 63-for-63 would still be around 53 percent.

Have fun filling out those sheets. Just don't get your hopes up.