6 Bracket Busters Who Ruined Everyone's NCAA Tournament Bracket

by Jeremy Block - 3/14/2026

Bracket busters that ruined everyones bracket Doug Edert Saint Peters

At some point during the first weekend of March Madness, something goes wrong for almost everybody who filled out a bracket. Whether it's a power conference program that comes out flatfooted or a double-digit seed from a league nobody watches that suddenly looks like a top-25 team, there is always at least one team that makes the whole thing fall apart.

Nobody fills out a bracket expecting to be wrong. And yet, every year, upsets nobody saw coming blow up more brackets than anyone wants to admit. So, let's revisit six bracket busters that stunned the college basketball world.

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George Mason (2006)

Long before anyone took a mid-major seriously in March, a team from Fairfax, Virginia set out to make the entire college basketball world look stupid. George Mason came in as an 11-seed out of the Colonial Athletic Association after getting a bid that plenty of people were already skeptical about, considering they had lost to Hofstra in the conference tournament. Jim Larranaga's program had never won a single NCAA tournament game in its history going into that bracket.

The Patriots kicked off their run against a Michigan State 6-seed that nobody expected to lose in the first round—and George Mason beat them by 10. Just when people thought that was the biggest shocker, it only got better. George Mason then took down North Carolina, the reigning national champions. Then Wichita State. And then, in the Elite Eight, UConn in overtime, 86-84.

They eventually fell to Florida in the Final Four, but by then the bracket damage was done. George Mason was supposed to be a first-round exit, and instead they became the measuring stick for every Cinderella story that came after them.

VCU (2011)

Before VCU played a single game, people were already arguing about whether they deserved to be in the tournament. Shaka Smart's Rams went 28-12, finished 4th in the CAA, and still got a bid that had ESPN analysts questioning the committee's judgment.

Drawing an 11-seed, the Rams hit the ground running, winning five straight games. After knocking off USC in the First Four, they beat 6-seed Georgetown, then 3-seed Purdue by 18, then 10-seed Florida State in overtime, and then 1-seed Kansas 71-61 in the Elite Eight.

Butler eventually would go on to end VCU’s historic run in the Final Four, and by then people’s brackets were left in shambles. Nobody who picked against VCU in the first round, which was almost everybody, had a bracket worth looking at by the time it was over.

UMBC (2018)

Who can forget the night a 16-seed from Baltimore County made the entire sport stop in its tracks. Virginia rolled in at 31-2, holding opponents to the fewest points per game in the country. UMBC was a 25-11 America East team that got into the bracket by winning its conference tournament at the buzzer and entered the game as a 20.5-point underdog. And boy, did Vegas take a hurting on this one, including brackets worldwide.

UMBC shot 54% from the field, 50% from three, and outscored Virginia 53-33 in the second half, winning by 20 points, 74-54 against the No. 1 overall seed. In the first round.

Only 2.18 percent of entries in the official NCAA Bracket Challenge had UMBC winning that game, which means roughly 98 out of every 100 people had their bracket wrecked before the first weekend was halfway done. UMBC lost to Kansas State in the next round, but the only thing anyone remembers is the game that proved a 1-seed is just a number.

Saint Peters (2022)

A Jesuit school in Jersey City with an undergraduate enrollment of 2,637 shocked the world in 2022. Saint Peter's finished second in the MAAC regular season, won the conference tournament to earn their automatic bid, and came in as a 15-seed with a 22-12 record.

The Peacocks drew 2-seed Kentucky in the first round, who were an 18.5-point favorite, and beat them 85-79 in overtime. Then 7-seed Murray State. Then 3-seed Purdue, the team with the nation's most efficient offense. Saint Peter's became the first 15-seed in history to reach the Elite Eight, and only 0.87 percent of brackets had them beating Purdue.

An 8-seed North Carolina ended the Cinderella run in the Elite Eight, but by then Jersey City was already planning a parade. New Jersey hadn't sent a program to the Elite Eight since Seton Hall in 1991, and Saint Peter's made sure nobody forgot where they came from.

Princeton (2023)

Going into the 2023 tournament, everything was shaping up to be Arizona's year. The Wildcats were the Pac-12 tournament champions, and sat as a 2-seed. But then came a 15-seed Princeton squad from the Ivy League running a lethal, patient, and efficient offense that hadn't recruited a five-star prospect in years.

Princeton controlled the game from the jump, and never let Arizona breathe. The Wildcats went scoreless over the final four minutes while the Tigers won 59-55. From there, the Tigers just kept making history.

Princeton then beat 7-seed Missouri and went all the way to the Sweet 16 before falling to Creighton. Who would have thought that not just a 15-seed, but an Ivy League team, would shut down one of the most hyped rosters in the tournament and tear up brackets coast to coast in the process.

Oral Roberts (2021)

Nobody in the country was sweating their bracket over a Summit League champion from Tulsa. Oral Roberts came in at 18-11 as a 15-seed, and Ohio State was a 16-point favorite with a roster built for a deep run. Over 95% of submitted brackets chose the Buckeyes to advance. This was supposed to be a one-day story at most.

Oral Roberts beat 2-seed Ohio State 75-72 in overtime in the first round, then knocked off 4-seed Florida 81-78 to reach the Sweet 16, becoming only the second 15-seed in tournament history to get that far. Two programs that the overwhelming majority of the country had penciled in for the second weekend, both gone. Most brackets were already recycled paper at this point.

3-seed Arkansas ended the run 72-70 in the Sweet 16, but it didn't matter. A school of just over 4,000 students from Tulsa had just beaten two programs with a combined enrollment of over 118,000 and reached the second weekend of March as a 15-seed. Nobody saw it coming, and nobody who filled out a bracket that year forgot it.

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Start:	March 14, 2026 @ 10:10 PM
Expert:	Vernon Croy
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6 Bracket Busters Who Ruined Everyone's NCAA Tournament Bracket

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