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March Madness Sweet 16 Odds: Michigan Leads, Florida Upset Shakes Brackets

By Andrie Thomas
Casino Expert
Mar 25, 2026
8 min read
Quick Answer: Michigan has emerged as the overall favorite to win the 2026 NCAA Tournament at +300 odds at BetMGM, according to Covers. Florida, the reigning champion and a No. 1 seed, suffered the tournament’s biggest upset, losing to 8-seed Iowa. Michigan is the only Sweet 16 team laying double digits, at 10.5 points.

The 2026 NCAA Tournament has delivered a dramatic mix of chalk and chaos. Michigan sits atop the futures board at +300 to win it all at BetMGM, while reigning champion Florida’s stunning loss to 8-seed Iowa sent shockwaves through sportsbooks and bracket pools alike. According to Covers, favorites went 29-19 against the spread between Thursday and Sunday and won 37 games outright.

Favorites Dominate the Early Rounds

A 22-Game Winning Streak Sets the Tone

NCAA Tournament favorites built serious momentum early, going on a 22-game winning streak from Thursday to Saturday, per Covers [1]. That run signaled a chalky tournament where higher seeds were handling business and bracket busters were few. The streak reinforced the value of backing favorites in the opening rounds, at least on the moneyline.

When the full Thursday-to-Sunday window closed, favorites had gone 29-19 against the spread and won 37 games outright [1]. That is a strong overall record, though the ATS numbers show the spread still provided some resistance. Bettors who backed favorites straight up fared considerably better than those chasing points.

The outright dominance of favorites meant that perfect brackets survived longer than in many recent tournaments. With top seeds advancing at a high rate, bracket pools heading into the Sweet 16 still had a handful of near-perfect entries in contention. The chalky results kept the field narrow and the pressure high.

Michigan Rises to the Top of the Futures Board

Michigan has emerged as the overall favorite to win the 2026 NCAA Tournament, carrying +300 odds at BetMGM [1]. That number reflects both the Wolverines’ on-court performance and the betting public’s confidence heading into the Sweet 16. At +300, a winning futures bet would return three times the stake, though no outcome is guaranteed.

The Wolverines are also the only team in the Sweet 16 laying double digits, listed at 10.5 points in their upcoming matchup [1]. That spread signals a significant talent gap between Michigan and their next opponent, at least in the eyes of oddsmakers. No other Sweet 16 team is favored by that margin, making Michigan’s line stand out clearly on the board.

March Madness Sweet 16 Odds: Michigan Leads, Florida Upset Shakes Brackets
March Madness Sweet 16 Odds: Michigan Leads, Florida Upset Shakes Brackets

Florida’s Upset Rocks Sportsbooks and Brackets

The Biggest Upset of the Tournament So Far

Florida, the reigning champion and a No. 1 seed, suffered the biggest upset of the tournament, losing to 8-seed Iowa [1]. For a defending champion to fall in the early rounds is a rare and bracket-shattering event. The loss immediately eliminated a massive portion of bracket entries that had Florida advancing deep into the field.

The upset was not just painful for bracket holders. It was a significant financial event for sportsbooks, but not in the way most people assume. According to Covers, 78% of the spread handle was on Florida heading into that game [1]. When the Gators lost, betting operators collected on the majority of that action, turning a lopsided public bet into a profitable result for the books.

Florida’s exit also reshuffled the futures market entirely. With the reigning champion gone, the path to the title opened up for teams like Michigan, which subsequently moved to the top of the odds board at BetMGM [1]. One upset can reprice an entire futures market, and Iowa’s win over Florida did exactly that.

Public Money and Sportsbook Liability

The 78% spread handle figure on Florida is a textbook example of lopsided public betting [1]. When the public loads up on one side that heavily, sportsbooks carry significant liability if that side wins. Florida’s loss meant the books were on the right side of a heavily one-sided market.

This dynamic is a core reason why sportsbooks do not always move lines to balance action perfectly. Sometimes the house accepts the liability and wins big when the public is wrong. The Florida-Iowa result was one of those moments in the 2026 tournament.

Sweet 16 Odds at a Glance

Team Tournament Win Odds (BetMGM) Sweet 16 Spread
Michigan +300 -10.5 (only double-digit line)
Florida Eliminated Lost to 8-seed Iowa

The table above reflects the key data points confirmed by Covers [1]. Michigan’s +300 futures price and -10.5 Sweet 16 spread are the two most significant numbers on the board heading into the next round. No other team in the Sweet 16 is laying more than single digits, which isolates Michigan as the clear oddsmaker favorite.

Florida’s elimination is equally important context. As the No. 1 seed and reigning champion, the Gators were expected to be a major futures liability for sportsbooks. Their early exit removed that liability and shifted the market toward Michigan and the remaining field.

Top seeds are favored across the entire Sweet 16 board, according to Covers, continuing the chalky theme of the tournament. The opening rounds set a tone of favorites winning outright, and the Sweet 16 lines reflect oddsmakers expecting more of the same [1]. Whether the chalk continues or upsets emerge will define the rest of the bracket.

What This Means for Sports Bettors

The 2026 NCAA Tournament has produced clear patterns that bettors tracking NCAA betting results should understand. Favorites dominated outright, going 37-0 in wins across the first rounds, but the 29-19 ATS record shows that laying points with favorites was a more mixed proposition [1]. Moneyline bettors backing chalk fared better than spread bettors overall.

Michigan’s -10.5 Sweet 16 spread is the largest in the round, and it carries real risk for bettors on either side [1]. Large spreads in tournament basketball can be volatile, as teams trailing by double digits sometimes cover late or favorites ease off the gas. The number is notable precisely because no other team in the Sweet 16 is in that territory.

For readers who enjoy fast-payout online casino platforms and sports betting, the BetMGM futures market on Michigan at +300 represents the current market consensus on who wins the tournament. Futures bets carry inherent uncertainty across multiple rounds, and the Florida upset is a reminder that even No. 1 seeds and reigning champions can exit early.

Key Takeaways

  • NCAA Tournament favorites went on a 22-game winning streak from Thursday to Saturday, per Covers [1].
  • Favorites finished 29-19 against the spread and won 37 games outright between Thursday and Sunday [1].
  • Michigan is the overall tournament favorite at +300 odds at BetMGM [1].
  • Florida, the reigning champion and a No. 1 seed, lost to 8-seed Iowa in the tournament’s biggest upset [1].
  • 78% of the spread handle was on Florida before their loss, benefiting sportsbook operators [1].
  • Michigan is the only Sweet 16 team laying double digits, listed at 10.5 points [1].
  • Top seeds are favored across the entire Sweet 16 board, continuing the chalky tournament trend [1].

Frequently Asked Questions

Who is favored to win the 2026 NCAA Tournament?

Michigan is the overall favorite to win the 2026 NCAA Tournament, carrying +300 odds at BetMGM, according to Covers [1]. The Wolverines are also the only Sweet 16 team laying double digits at 10.5 points in their next game.

What was the biggest upset in the 2026 NCAA Tournament so far?

Florida, the reigning champion and a No. 1 seed, lost to 8-seed Iowa, which Covers identified as the biggest upset of the tournament [1]. The loss eliminated the defending champion in the early rounds and reshuffled the futures market.

Did sportsbooks win or lose on Florida’s upset loss?

Sportsbooks benefited from Florida’s loss, as 78% of the spread handle was on the Gators heading into the game, according to Covers [1]. When Iowa pulled the upset, operators collected on the majority of that heavily one-sided public action.

How did favorites perform against the spread in the 2026 NCAA Tournament first rounds?

Favorites went 29-19 against the spread between Thursday and Sunday, while winning 37 games outright, per Covers [1]. The ATS record shows that while favorites won most games, laying points with them was a more inconsistent strategy than backing them on the moneyline.

The Bottom Line

The 2026 NCAA Tournament has been defined by two competing storylines: a dominant run by favorites and a bracket-breaking upset that eliminated the reigning champion. Michigan now stands alone at the top of the futures board at +300 at BetMGM, backed by the strongest spread in the Sweet 16 at 10.5 points [1]. The Wolverines have earned their status as the team to beat.

Florida’s loss to Iowa at 8-seed is the defining moment of the tournament so far. It wiped out bracket entries, shifted futures liability away from sportsbooks, and reminded the betting public that chalk is never a certainty in March. With 78% of the spread handle on Florida before that game, the books came out ahead in a big way [1].

The Sweet 16 opens with top seeds favored across the board, and Michigan carrying the heaviest line of any team in the round. Whether the chalk holds or another upset reshapes the bracket, the next round will determine whether Michigan’s +300 price looks like value or a warning sign.

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Sources

  1. [1]: Covers – NCAA Tournament Sweet 16 odds, Michigan futures, Florida upset, spread handle data, and favorites ATS record
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