The first weekend of the 2026 NCAA Tournament started out about as chalky as it gets. Thursday's slate was almost completely chalk, and Friday didn’t do much to change that. Favorites were cruising, higher seeds were holding serve, and for a minute there, it felt like this thing might just play out the way it was “supposed” to.

By the end of the first round, people were already complaining that March had gone soft — no real chaos, no wild swings, no true Cinderella story grabbing hold of the weekend in the new NIL age. The usual madness just wasn’t there. Instead, it was a lot of comfortable wins and a whole lot of brackets still looking pretty clean heading into the second round.

And then the weekend came.

You can go a day, maybe even two, thinking everything’s under control — and then suddenly it flips. By the time Sunday night rolled around, the entire feel of the tournament had changed. Iowa had knocked out the defending national champion on a buzzer-beater that felt like it happened in slow motion, Texas had turned a First Four appearance into a full-blown run to the Sweet 16 with three straight upsets, and the last perfect bracket in the country had finally been wiped out.

Just like that, all the calm from the first couple days was gone, and it got replaced by the kind of chaos that makes this tournament what it is. Suddenly, March looked like March again.

There’s a Difference Between Surprising and Destructive

Every March there's going to be upsets. Not every upset actually wrecks a bracket, though — and that difference is the whole point here.

A normal surprise is when a lower seed wins a game you didn’t really expect, but if we’re being honest, it usually doesn’t hurt that bad because most people weren’t riding that favorite very far anyway if they're losing to a much lower seed. You lose a pick, you shrug it off, and you keep moving.

A real bracket killer feels different. It’s when a team that everybody circled to win not just this game, but the next one too — maybe even two more — suddenly goes home. That’s when everything flips.

Texas Didn’t Just Bust Brackets — They Kept Coming Back for More

Start with the most complete bracket-wrecking story of the first two rounds: the Texas Longhorns.

Let’s set the scene, because it really matters here. Texas wasn’t just overlooked — they were barely in the tournament to begin with. First Four. Playing NC State just to earn a spot in the actual bracket. They had dropped five of their last six games coming in, looked inconsistent for most of the year, and for a first-year coach in Sean Miller, it felt more like a reset season than anything close to a run. Twenty-one wins, fourteen losses. If you’re filling out a bracket, that’s the kind of resume you scroll past without thinking twice.

After getting through NC State, the public still wasn’t buying it. Texas showed up in just 26.85 percent of Yahoo brackets to beat BYU. And honestly, that made sense on paper. BYU had AJ Dybantsa — the projected No. 1 pick in the 2026 NBA Draft — and 72.29 percent of people had the Cougars moving on.

And then Texas just… controlled the game. That’s the part that stands out. It wasn’t fluky, it wasn’t some weird shooting night that flipped things. Matas Vokietaitis went for 23 and 16, they dictated the pace in the second half, and when BYU made that late push to cut it to four, Texas didn’t panic. They locked in, got stops, and closed it out. Dybantsa got his 35, but it never felt like Texas lost control of the moment.

That alone wiped out over 72 percent of brackets in that spot. But like we said earlier, one upset usually doesn’t kill you. You take the hit, you move on.

It’s Cute Once — It’s Dangerous Twice

The Gonzaga game is where this turns from a nice story into a real bracket-buster.

Gonzaga was exactly the kind of team people trust this time of year. 31-4. Mark Few. Nine straight Sweet 16 appearances. Second only to Duke with 11 in the last 20 years. A team that doesn’t mess around early in the tournament. They were a 6.5-point favorite, and 70 percent of Yahoo brackets had them advancing. Just six percent had Texas getting past the second round. This is the kind of game most people don’t even debate — you pencil Gonzaga in and start thinking about the Sweet 16 matchup.

And for most of the night, it felt like it was heading that way. But Texas just kept hanging around, and late, they were the team making the plays. With under a minute left, Gonzaga trims it to one on a dunk, and that’s usually where experience takes over. Instead, Sean Miller draws up a set, and Camden Heide — who hadn’t scored all game — ends up wide open in the corner.

Fourteen seconds left. First points of the night. Bang.

That’s the shot that flips everything. Not just the game, but thousands and thousands of brackets at once. Texas wins 74-68, Gonzaga is out.

This is just the sixth team in the modern era to go from the First Four all the way to the Sweet 16, and the first since UCLA’s 2021 run. Sean Miller, in year one, has Texas in the regional semis — something no Longhorns coach had ever done in their first season. None of that was baked into anyone’s bracket. That part wasn’t even considered. And now it’s the biggest story of the first weekend.

Iowa: The Single Most Violent Blow

And then there’s Iowa.

If Texas is the bigger cumulative story, Iowa gave us the one moment that instantly changed everything. No buildup, no warning — just one of those games where you look up, check the score, and realize half the country is about to have a problem.

Florida came into the Round of 32 as about as safe of a pick as you could make. No. 1 seed in the South. Defending national champion. And not just winning — dominating. They had just blown out Prairie View A&M by 59. So when people were filling out brackets, Florida wasn’t a discussion. You put them through to the Sweet 16 and keep it moving. 90.77 percent of Yahoo brackets had them advancing. That’s about as close to automatic as it gets.

Iowa didn’t look like the team that was going to challenge that. Nine seed, 23-12, first-year head coach in Ben McCollum, and their best player, Bennett Stirtz, couldn’t hit anything from deep — 0-for-9 from three. As a team, they went 7-for-24. On paper, it’s the kind of game where you expect the higher seed to settle in, make a run, and take over late.

But watching it live told a completely different story.

Iowa was the team dictating everything. They controlled tempo, they stayed physical, and they never looked overwhelmed. They led for most of the game — not by accident, but because they were the more composed team for long stretches. Even when Florida started pushing back, you never really got the sense that Iowa was hanging on for dear life. It felt more like they were forcing Florida to come take it from them.

By the time Florida finally grabbed the lead late, it almost felt like the inevitable had caught up — like Iowa had played well, but the better team was going to escape anyway. That’s usually how these games go.

But everything leading up to that moment mattered. Because Iowa had already proven they belonged in that game. So when things broke their way late, it didn’t feel like a fluke — it felt like the payoff to how they’d played for 35-plus minutes.

The Possession That Flipped Everything

Then you get to the final seconds, and it looks like it’s over anyway. Florida claws all the way back, Isaiah Brown steps to the line with 8.9 seconds left, hits one of two, and gives the Gators a 72-70 lead. That’s usually it. That’s the moment where the better team survives, the underdog’s run ends, and everyone moves on like nothing happened.

Except Florida completely lost track of the situation.

On the inbound, Bennett Stirtz leaks out, untouched. No resistance, no awareness — just a straight sprint down the floor. He draws the defense, the help decides to protect the rim, and the ball gets kicked to Alvaro Folgueiras in the right corner. Clean catch. In rhythm. No hesitation.

Three.

Iowa 73, Florida 72. Four and a half seconds left. Florida doesn’t even get a real look on the other end. Game over.

“March is for the dreamers,” Folgueiras said afterward. And yeah, that’s about as perfect a line as you can have for a moment like that.

What makes it sting even more is how avoidable it was for Florida. In a two-point game with under ten seconds left, the entire defensive priority is simple: do not give up a three. Force anything else. Contest everything. Make them take a rushed two, make them inbound into traffic, anything but a clean look from deep.

And somehow, they gave up that exact shot anyway.

That’s where this goes from just a great game to a bracket killer. Iowa was picked in only 4.79 percent of Yahoo brackets to win. Florida was sitting at 90.77 percent to advance. That gap is massive. So when that shot drops, it’s not just one upset. It’s nearly nine out of every ten brackets taking a direct hit at the same time.

One possession. One defensive breakdown. One shot. And just like that, one of the safest picks of the weekend is gone.

High Point: The First-Round Landmine

Wisconsin has a habit of losing first-round games they shouldn’t lose. They fell to Iowa State in 2022. They fell to James Madison in 2024. Each time, it catches people off guard, and each time, it leaves a chunk of brackets with an ugly empty line where a Badger run was supposed to be.

In 2026, it was High Point’s turn.

The No. 12 seed Panthers came in as 10.5-point underdogs. They were picked in just 15 percent of Yahoo brackets to win. Wisconsin had 84 percent of the public behind them in round one, and 34 percent of brackets still had the Badgers advancing into the next round, meaning a lot of people were counting on Wisconsin not just to survive the first game, but to do something in round two as well.

That makes High Point’s win a two-layer bracket killer. It wasn’t just that Wisconsin lost in round one. It’s that a third of the entire field lost two picks at once.

Chase Johnston was the story of the game. He came in having made 64 three-pointers on the season and zero two-pointers. He was literally the most efficient specialist in college basketball — he had played more minutes and scored more points without a made two-pointer than any other player in the country. And then with 11 seconds left, Rob Martin grabbed a defensive rebound, pushed the pace, and threw it ahead to Johnston in transition for a layup.

His first two-pointer of the season gave High Point an 83-82 lead and ended any hope of a Wisconsin comeback. Boyd’s last-second layup attempt was blocked, and just like that, it was over.

For High Point, a program out of the Big South that nobody would schedule during the regular season — their coach Flynn Clayman lit into that after the win, pointing out that nobody wanted to play them — this was the first March Madness victory in program history. For Wisconsin, it was a third first-round loss in six tournament appearances and their ninth year without reaching the Sweet 16.

VCU: This Wasn’t an Upset — This Was a Collapse

VCU’s win over North Carolina didn’t hit the bracket numbers as hard as some others, but it felt bigger because of who it was. UNC had 67 percent of Yahoo brackets behind them in round one and another 23 percent carrying them forward. That’s a lot of people tied to a brand-name team — and that’s why this one lingered.

UNC was up 19 with 15 minutes left. That’s supposed to be over, especially for a program that was 48-2 in the tournament when leading by double digits at halftime. And then it wasn’t.

Terrence Hill Jr. flipped the game. Quiet first half, then 34 points total, 23 after the break, 7-for-10 from three, and the go-ahead stepback in OT. Meanwhile, UNC completely stalled — 0-for-9 over the final 7:44, missed free throws, turnovers late. It all unraveled pretty fast.

It ends as the sixth-largest comeback in tournament history, the biggest of all-time in the first round, VCU’s first win since 2016, and a loss that will stick with UNC for a ery long time.

Tennessee: The Last Perfect Bracket Goes Down

On paper, Tennessee over Virginia isn’t some crazy upset — a six over a three happens every year. But this one carried a different kind of weight.

The Cavaliers had looked like a typical March team — physical, disciplined, and steady — so most people just penciled them through.

The game itself wasn’t a very clean one. Virginia tied it late, there was a big replay that went Tennessee’s way, and the Vols had to close it out at the line. They did, 79-72, and moved on to another Sweet 16 under Rick Barnes.

But the real story came with it. This was the game that finally killed the last perfect bracket in the country. One entry had made it through 43 straight games without a miss, and Tennessee ended it at game 44.