How often does a 12 seed beat a 5 seed?
About 36 times in 100. The 12 seed has beaten the 5 seed 57 times in 160 games since 1985. It is the most famous upset in the bracket, and the math backs it up.
The 12-over-5 upset, by era. It has grown more common.
It happens almost every year
At least one 12 seed has won in 34 of 40 tournaments.
Two won in 2025.
McNeese beat Clemson. Colorado State beat Memphis.
2023 was one of the rare quiet years. No 12 seed won.
When a 12 wins, it can win again
22 of the 57 winning 12 seeds also won their next game.
That is about 39 in 100.
The prize is usually a beatable 4 or 13 seed.
One low seed in your Sweet 16 is normal. A 12 is the classic pick.
How we counted
Counted from every men's tournament game, 1985 to 2025.
Main bracket only. First Four and Opening Round games are not counted.
The full table lives on which first-round upsets happen most.
Five questions start it. You finish it.
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Common questions
How often does a 12 seed beat a 5 seed?
About 36 times in 100. Since 1985, 12 seeds have won 57 of 160 games against 5 seeds in the men's tournament.
Has a 12 seed ever reached the Final Four?
No. No 12 seed has reached the Final Four. A few reached the Elite Eight, like Oregon State in 2021.
More bracket basics
- How to fill out a March Madness bracket
- What is a March Madness bracket?
- How does bracket scoring work?
- What is a Cinderella team?
- When is Selection Sunday 2027?
- How often do upsets happen?
- Which first-round upsets happen most often?
- How often does a 12 seed beat a 5 seed?
- How often does an 11 seed beat a 6 seed?
- How often does a 10 seed beat a 7 seed?
- How often does a 13 seed beat a 4 seed?
- What is a seed in March Madness?
- What is March Madness?
- Has anyone ever had a perfect bracket?
- Fill out a bracket if you know nothing about basketball
- What is the Final Four?
- How many teams are in March Madness?
- What is the opening round in March Madness?
- What is the Sweet 16?
- What is the Elite Eight?
- How many games are in March Madness?
- What is an automatic bid?
- What is an at-large bid?
- What is a bubble team?
- What is bracketology?
- How many rounds are in March Madness?
- What is the NIT?
- What is a conference tournament?
- What are NET rankings?
- What is a bid stealer?
- What is the selection committee?
- What is Wins Above Bubble?