Analysts release complete March Madness Bracket picks highlighting likely upsets at multiple risk levels, for free

With the final countdown to locking in March Madness brackets underway, our data analysts have unveiled a groundbreaking set of Free Upset Prediction Brackets for the 2025 NCAA Tournament, designed specifically for March Madness pools that reward bold underdog picks. 

Using advanced machine-learning algorithms and thousands of game simulations, the brackets have been assembled at six different risk levels, providing fans essential data to maximize their March Madness Cinderella picks.

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March Madness Upset Brackets: Data-Driven Underdog Picks

Unlike traditional brackets that focus solely on picking winners, Dimers’ Upset Brackets cater to pools that incentivize risk-taking by rewarding upsets.

Upset Bracket for the 2025 NCAA Tournament at Six Different Risk Levels:

Whether you prefer a calculated approach or embrace chaos, Dimers has created six distinct bracket options tailored to different levels of risk tolerance.

• Most Conservative Upset Bracket (#1): Safest option with calculated risks on select underdogs.

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• Low-Risk Upset Bracket (#2): A balance between strong favorites and key upset picks.

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• Mid-Risk Upset Bracket (#3): A well-rounded mix of underdogs and top-seeded teams.

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• High-Risk Upset Bracket (#4): Bolder selections with high-upside Cinderella runs.

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• Wild Card Upset Bracket (#5): Heavy on lower-seeded teams making deep tournament runs.

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• Chaos Theory Bracket (#6): Maximum madness—embracing unpredictable upsets at every turn.

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Each bracket is available for free download, as are Dimers' full suite of complete March Madness brackets, featuring the Ultimate Data Bracket and 68 individual brackets that track the mostly likely path to the 2025 NCAA Championship for every team in the men's basketball tournament.

To download your brackets, simply:

1. Select the brackets that fit your strategy.
2. Sign up for a free or premium Dimers account, or log in.
3. Gain instant access to the data-backed March Madness bracket picks on the list of downloadable brackets above.

Our Top March Madness Bracket Picks:

For those in March Madness pools with standard scoring, the complete NCAA Tournament bracket below features our highest-probability outcomes for every game, a counterpoint to the upsets in our other brackets.

Take a closer look at our analysts' 2025 March Madness predictions in this complete NCAA Tournament bracket, featuring our top picks for every game.

How These 2025 March Madness Brackets were Created:

Dimers’ proprietary machine-learning model processes thousands of data points, including team performance, player stats, historical trends, and even game-specific variables like home vs. away trends and projected minutes. By simulating every matchup 10,000 times, our analysts pinpoint the smartest upset picks without sacrificing the foundation of a strong bracket.

The new "Chaos Theory" March Madness Bracket predicts University of Florida to win the 2025 NCAA Tournament.

How to Use these Brackets for in Your March Madness Pool:

Many alternative March Madness pools place additional value on successfully picking upsets. Dimers’ Upset Brackets are designed for these unique formats, including:

• Classic Upset Pool: Bonus points are awarded based on seed differences. A correctly picked 12-over-5 upset, for example, might earn additional points.

• Upset Assassin Pool: Players can “steal” points from defeated higher-seeded teams, making late-round upsets particularly valuable.

March Madness Upset History: Notable Cinderella Stories

Every year, March Madness delivers shocking results. Here are some of the most famous underdog victories in tournament history:

• UMBC vs. Virginia (2018): UMBC (16) made history as the first-ever 16-seed to defeat a 1-seed in the men’s tournament.

• NC State vs. Houston (1983): NC State (6) pulled off an all-time classic upset to win the national championship over Houston (1).

• Villanova vs. Georgetown (1985): Villanova (8) shocked the powerhouse Georgetown (1) team to claim an improbable title.

These historic upsets prove that underdogs have a real shot—and Dimers’ Upset Brackets help identify this year’s most promising Cinderella stories.

College Basketball Parlay Picks and Promos to Enhance the Free Bracket Picks:

College basketball fans using this data for sports betting are advised that Bet365 has launched new promos in Tennessee, Illinois, and a nationwide ahead of Thursday’s Tournament opener. These are great options to eligible users looking for bonus bets to as an alternative to wagering with their own money. 

Better, our team has used the same advanced March Madness predictive data that underlies our bracket picks to identify these high-value NCAA Tournament parlays. 

Data Science Meets Bracketology:

At Dimers, we don’t just guess—we use cutting-edge data science to analyze every game with precision. Our machine-learning models integrate vast amounts of data, tracking key metrics across team and player performance, historical trends, and live updates.

Dimers Pro members typically get exclusive access to this advanced analysis, but for March Madness, these Upset Brackets are free to download. Whether you're playing in an office pool, a high-stakes bracket challenge, or a specialized upset-focused contest, Dimers.com has the tools you need to make the smartest picks.