The excitement around March Madness 2026 has already begun, and betting markets are reacting quickly after the NCAA tournament bracket announcement. Even though Duke entered the tournament as the No. 1 overall seed, it was not initially the top betting favorite when sportsbooks released their odds. However, as fans and bettors started placing wagers after Selection Sunday, the situation shifted quickly.
Within hours, Duke moved into the top spot in betting odds, overtaking Michigan, which had briefly been considered the leading contender for the national title. The latest odds now position Duke as the team to beat in March Madness 2026.
Duke Named No. 1 Overall Seed in March Madness 2026
When the 2026 NCAA Tournament bracket was officially revealed, Duke held the No. 1 overall seed among the 68 participating teams. Despite this prestigious position, sportsbooks initially listed Michigan as the betting favorite to win the championship.
Right after the bracket reveal on Sunday, BetMGM listed the odds as follows:
| Team | Opening Championship Odds |
|---|---|
| Michigan | +325 |
| Duke | +333 |
| Arizona | +425 |
| Florida | +600 |
However, as betting activity increased later that same day, Duke quickly moved into the favorite position.
Betting Odds Shift Quickly After Selection Sunday
As the evening progressed and bettors analyzed the bracket, Duke’s odds improved, reflecting growing confidence in the team.
Updated odds later Sunday evening showed a new order among the championship contenders.
| Team | Updated Odds |
|---|---|
| Duke | +300 |
| Michigan | +350 |
| Arizona | +400 |
| Florida | +650 |
This rapid change shows how strongly the betting market believes in Duke’s chances during March Madness 2026.
Duke Already Defeated Michigan Earlier This Season
One reason for the strong confidence in Duke during March Madness 2026 is the team’s earlier victory over Michigan.
On February 21, Duke defeated Michigan 68–63 in Washington, D.C., at Capital One Arena. The game also served as a preview opportunity for Duke to play in the arena ahead of the NCAA tournament.
During that matchup, standout player Cameron Boozer delivered an impressive performance:
- 18 points
- 10 rebounds
- 7 assists
As the top seed in the East Region, Duke could return to Washington, D.C., if the Blue Devils advance through the first two rounds of March Madness 2026.
Bracket Path Could Favor Michigan
Even though Duke is now the betting favorite, some analysts believe Michigan may have received an easier route to the Final Four.
Duke’s East Region includes several strong programs:
- UConn
- Michigan State
- Kansas
- St. John’s
Meanwhile, Michigan’s region contains:
- Iowa State
- Virginia
- Arkansas
- Texas Tech
Because Michigan is the No. 2 overall seed, a potential matchup between Duke and Michigan would not occur until the national championship game in March Madness 2026.
Arizona Dominates the West Region
Another major contender in March Madness 2026 is Arizona, which holds the top seed in the West Region.
Arizona had a remarkable season, winning both:
- The Big 12 regular-season championship
- The Big 12 tournament title
The Wildcats secured the tournament crown by defeating Houston in the conference championship game on Saturday.
Arizona’s region also includes strong teams such as:
- Purdue (No. 2 seed)
- Gonzaga (No. 3 seed)
This sets up a competitive path in the West for the March Madness 2026 tournament.
Houston Could Have Home-Court Advantage
Houston is another serious contender in March Madness 2026, currently listed as the fifth favorite at 10-1 odds.
The Cougars are the No. 2 seed in the South Region, where the regional finals will be held at the Toyota Center in Houston. Because the arena is located only a few miles from the University of Houston campus, the team could benefit from a strong home crowd.
If Houston reaches the Elite Eight and faces Florida, the Cougars may even be favored in that matchup due to this home-court advantage.
Full List of March Madness 2026 Championship Favorites
After the bracket announcement, sportsbooks released the latest list of March Madness 2026 title favorites.
| Team | Odds |
|---|---|
| Duke | +300 |
| Michigan | +350 |
| Arizona | +400 |
| Florida | +650 |
| Houston | +900 |
| Iowa State | 16-1 |
| Illinois | 20-1 |
| UConn | 22-1 |
| Purdue | 30-1 |
| Kansas | 40-1 |
| Arkansas | 50-1 |
| Michigan State | 50-1 |
These odds may continue to shift as the March Madness 2026 tournament progresses and teams advance through each round.
The road to the national championship in March Madness 2026 is already shaping up to be thrilling. Although Duke started as the No. 1 overall seed, it initially trailed Michigan in betting odds before quickly becoming the favorite once wagering began. Duke’s earlier win over Michigan and its strong roster have boosted confidence among bettors.
Still, the tournament remains unpredictable. Teams like Arizona, Florida, and Houston are also strong contenders with realistic chances of making deep runs. As March Madness 2026 unfolds, fans can expect dramatic upsets, intense matchups, and shifting championship odds until a winner is finally crowned.