How Often Does a 12 Seed Beat a 5 Seed?

How often does a 12 seed beat a 5 seed, and what does it mean for your March Madness bracket?

Grand Canyon University Antelopes forward Walter Ellis during the Jerry Colangelo Classic basketball game between the University of San Francisco Dons and the Grand Canon University Antelopes on December 18, 2021 at the Footprint Center in Phoenix, AZ.

Grand Canyon claimed one of two 12-5 upsets in 2024. (Photo: Christopher Hook/Icon Sportswire)

Everyone talks about how the 12 vs. 5 seed matchup is ripe for the upset picking, but how true is that? How often do 12 seeds beat 5 seeds, and what does this mean for your overall bracket strategy? Let’s dive into the complete 5 vs. 12 seed history in the NCAA Tournament below.

How Often Does a 12 Seed Beat a 5 Seed?

Since the NCAA Tournament expanded to 64 teams in 1985, the 12 seed has a 57-103 record against the 5 seed in the first round.

This means 12 seeds win about 35.6% of the time, which is a significant jump compared to 13 seeds winning 21.2% of first-round games.

Some memorable, recent 12-seed upsets include:

  • 2025: Colorado State over Memphis & McNeese State over Clemson
  • 2024: Grand Canyon over Saint Mary’s & James Madison over Wisconsin
  • 2022: New Mexico State over UConn & Richmond over Iowa
  • 2021: Oregon State over Tennessee
  • 2019: Oregon over Wisconsin, Liberty over Mississippi State, & Murray State over Marquette
  • 2017: Middle Tennessee over Minnesota
  • 2016: Yale over Baylor, Little Rock over Purdue

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What’s the Farthest a 12 Seed Has Gone in the NCAA Tournament?

The farthest a 12 seed has ever advanced in the NCAA Tournament is to the Elite Eight (quarterfinals). Two 12-seed teams have achieved this impressive feat:

  • 2021: Oregon State (beat Tennessee, Oklahoma State, and Loyola Chicago before losing to Houston)
  • 2002: Missouri (beat Miami, Ohio State, and UCLA before losing to Oklahoma)

Several other 12 seeds have reached the Sweet 16, making this seed line live to make a run any given year.

What Does This Mean For Your 2025 Bracket?

Historical stats are interesting, but they won’t win your pool.

The 12-seed wins about one-third of the time. Because of this, many bracket pickers conclude that they must always pick at least one 12-seed to win in the first round.

But which team should you choose? Should you take more than one? And how far should that 12-seed go? 

All of these decisions can feel overwhelming, but they don’t have to because PoolGenius does the heavy lifting for you.

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