Billions Bet on March Madness as Final Four Teams Emerge

Fans expected to wager over $3 billion on 2026 NCAA men's and women's basketball tournaments

Mar. 31, 2026 at 5:20pm

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A fragmented, geometric painting in shades of blue, red, and yellow, conceptually representing the excitement and unpredictability of college basketball tournament betting.The vibrant, high-stakes world of March Madness betting is captured in a cubist-inspired illustration that deconstructs the action on the court.Washington Today

The American Gaming Association estimates that Americans will legally bet $3.3 billion on the 2026 NCAA men's and women's basketball tournaments, up from $3.1 billion in 2025. This makes March Madness one of the biggest and most widely bet-on sporting events in the U.S., surpassing even the Super Bowl. As the Final Four matchups are set, a look at the betting resumes of the four remaining teams - Michigan, Arizona, Illinois, and UConn - shows their records against the spread and over/under totals this season.

Why it matters

The massive amount of betting on March Madness highlights the growing popularity and acceptance of sports gambling in the U.S. The data on how the Final Four teams have performed against the spread and over/under totals provides valuable insights for bettors as they look to wager on the tournament's conclusion.

The details

According to the report from the American Gaming Association, the $3.3 billion in expected legal bets on the 2026 NCAA tournaments is roughly equivalent to the Gross Domestic Product of Greenland. The AGA also estimates close to $3 billion will be bet on the World Cup final this year, though the amount bet illegally worldwide is likely much higher. Looking at the betting resumes of the Final Four teams, Michigan is 18-20 against the spread and 16-22 over/under this season, while Arizona is 23-15 ATS and has played 14 games over 157 points. Illinois is 21-15 ATS and has played 20 games over 140 points, and UConn is 4-2 as an underdog this season, including a win over Illinois earlier in the year.

  • The 2026 NCAA men's and women's basketball tournaments are currently underway.
  • The Final Four matchups are set for April 5-7, 2026.

The players

Michigan Wolverines

The Michigan Wolverines are a college basketball team that has reached the Final Four of the 2026 NCAA Tournament.

Arizona Wildcats

The Arizona Wildcats are a college basketball team that has reached the Final Four of the 2026 NCAA Tournament.

Illinois Fighting Illini

The Illinois Fighting Illini are a college basketball team that has reached the Final Four of the 2026 NCAA Tournament.

UConn Huskies

The UConn Huskies are a college basketball team that has reached the Final Four of the 2026 NCAA Tournament.

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What’s next

The Final Four matchups will take place on April 5-7, 2026, with the national championship game scheduled for April 7.

The takeaway

The massive amount of betting on March Madness, surpassing even the Super Bowl, highlights the growing popularity and acceptance of sports gambling in the United States. As the Final Four teams emerge, the data on their betting performance this season provides valuable insights for bettors looking to wager on the tournament's conclusion.