March Madness College Basketball: What it is, How it Works and How to Win

Key Takeaways

• March Madness College Basketball is a 68-team, single-elimination NCAA men’s basketball tournament that drives massive betting interest because every game is high stakes and upset-heavy.
• A strong game-betting angle is to bet against the public by identifying heavily one-sided ticket counts and taking the less popular side.
• Track line movement, especially reverse line movement, to spot where sharp bettors may be influencing the market against public opinion.
• Shop for the best number and price across sportsbooks, since getting an extra half-point or better juice can make a major difference over time.
• For bracket pools, differentiate yourself from the crowd by picking a less popular champion and building a contrarian bracket rather than following the obvious favorites.

March Madness is one of the biggest betting spectacles on the calendar, combining nonstop college basketball action with the chaos of a single-elimination tournament. From bracket-busting upsets to powerhouse programs on upset alert, every game brings drama , and for bettors, opportunity.

Whether you’re sizing up individual matchups or trying to outsmart the crowd with your bracket, the NCAA Tournament is where strategy and madness collide.

What is March Madness College Basketball?

The world of sports betting is a never-ending rollercoaster. At any given moment, there are countless sports to choose from with dozens of individual games to target. However, when dissecting the betting calendar, there are a pair of events that draw far more betting interest than the rest.  

The single most heavily bet sporting event of the year is the Super Bowl. After all, the NFL is king when it comes to betting and no other individual game in any other sport comes close in terms of interest, money wagered and television ratings.

The second most heavily bet event in America is March Madness, otherwise known as the NCAA Tournament. This is when the top 68 men’s College Basketball teams compete in a single elimination, do-or-die multi-week tournament. Lose a game and your season is over. Keep winning and you get to survive and advance. The last team standing gets to cut down the nets and is crowned the champion. No other tournament in any other sport packs as much intensity, unpredictability and nail-biting anxiety as the NCAA Tournament.

Powerhouse teams can lose to a lesser opponent, just as “Cinderellas” can emerge out of nowhere and make a deep run to the Sweet 16 or Final 4. The reason they call it “March Madness” is because, historically speaking, the unexpected oftentimes comes true.

Unlike the Super Bowl, March Madness isn’t a single game. Instead, if offers dozens of games over several weeks, which provides bettors far more opportunities to build their bankroll. In 2025, the American Gaming Association estimated that Americans wagered $3.1 billion on March Madness. That number is expected to grow even higher with the emergence of prediction markets and more than 40 states legalizing sports betting within their borders.

Whether it’s betting on individual games or filling out a bracket with friends or coworkers, March Madness has become a cultural phenomenon that millions of Americans participate in every Spring.

With this in mind, let’s discuss a few tips that bettors should keep in mind this March Madness.

Creating the March Madness College Basketball Bracket

Before a single March Madness game is played, college basketball undergoes a specific process to determine which teams get the privilege to participate in the NCAA Tournament, also popularly referred to as “The Big Dance.”

Starting roughly one week before the NCAA Tournament, each conference in College Basketball holds their own mini–March Madness, known as Conference Tournaments. Here, teams in each conference are seeded based on their regular season conference records. Then, they undergo a single elimination tournament to crown a Conference champion. Whoever wins their respective conference tournaments earns an automatic bid to the March Madness NCAA Tournament.

Then, on Selection Sunday, a 12-member committee sifts through all the teams who didn’t win their conference tournament and selects the best remaining 37 teams, who then earn “at large” bids to the Big Dance. The 37 teams selected by the committee join the 31 automatic bid winners to form the 68-team field that will compete in the NCAA Tournament.

March Madness typically starts on a Thursday in mid-March. However, in recent years the NCAA Tournament has added a pre-tournament “first four” group of games, with the winners advancing to the 64-team bracket. March Madness ends with the championship game typically played the first week in April.

Bet Against the Public

Bettors have two distinct ways of wagering on March Madness. First, they can bet individual games throughout every round of the tournament. The second, and arguably more popular way, is to fill out a March Madness bracket, picking who will win each game straight up and win the NCAA Tournament (more on that later).

For those looking to bet individual matchups, one of the best ways to turn a profit is to bet against the public, otherwise known as “going contrarian.”

Because March Madness is so heavily bet, it makes for one of the best times on the sports betting calendar to “fade the public.” Simply put, the market is absolutely bombarded with public or “recreational” money. The ticket counts skyrocket, with Average Joes and Janes looking to bet on games just to get in on the fun.

However, many if not most of these casual bettors haven’t bet a single regular season game all year long. They don’t know the intricacies of betting on college basketball or have worthwhile knowledge of the teams competing. As a result, they are largely betting with their heart (not their head), taking the bigger name school, more popular team (maybe their alma mater) or whoever is the higher seed with the better record.

As a result, contrarian bettors love to identify games where the public is massively lopsided in favor of one team and then go the other way. In other words, zig when the Average Joes zag.

In order to go contrarian, bettors should focus on “bet splits,” which offer the percentage of bets and dollars on the spread, moneyline and total for every game. Web sites like VSiN.com offer accurate, reliable splits from both DraftKings and Circa Sports, allowing bettors to identify where the public and the smart money is leaning.

To bet against the public, bettors must focus on the percentage of bets or “tickets” column. This tells you where the majority of the public is leaning. A good line of demarcation is 65% vs 35%. If a team is receiving 65% of spread bets or more, that means they are a popular public play. Bettors looking to go contrarian would then want to go the other way and take the team getting 35% of bets or less.

For example, let’s say Alabama is a 7-point favorite against Texas and 75% of spread bets are laying the 7-points with the Crimson Tide (meaning Alabama must win by 8 points or more in order to cover). Contrarian bettors would look to go the other way and take Texas +7 because they are only getting 35% of tickets and, theoretically, being undervalued.

The whole idea of going contrarian is to capitalize on public bias and favoritism. If the masses are all loading up on one side, data-driven bettors like to place themselves on the side of the house and take the less popular side.

Why? Because more often than not the public is wrong.

Track Line Movement

Aside from taking a contrarian approach, bettors should also utilize a Live Odds page so they can monitor the betting market and identify which teams the sharps are pounding.

The easiest way to do this is to examine what the line opened at for a particular game and compare it to what the line is currently. In doing so, bettors can identify which side is taking in the majority of the sharp action from respected bettors. After all, unless it’s an injury, line movement is typically driven by respected bettors, also known as “pros” “sharps” or “wiseguys,” taking a position on a game.

Does this mean you should bet on every team that receives line movement in their direction? Not exactly. Instead, keep an eye out for fishy line moves that don’t make much sense when compared to the bet splits.

One of the best indicators of sharp action is Reverse Line Movement (RLM). This is when the betting line moves in the opposite direction of the bet percentages. In other words, the line is moving away from the popular side and toward the unpopular side.

For example, maybe Duke is a 10-point favorite and 80% of spread bets are laying the points with the Blue Devils. However, despite this lopsided support you see Duke fall from -10 to -9. Why would the oddsmakers drop the line to make it easier for the public to cover when they’re already hammering Duke to begin with? Because sharp reverse line movement has sided with the opponent. In this case, you would look to bet against the Blue Devils and take the opponent plus the points.

Or maybe Connecticut opens at -4 and has moved to -5 even though 65% of spread bets are betting against the Huskies and taking the underdog opponent plus the points. In this case, sharps would look to “fade the trendy dog” and back the Huskies.

In the end, the goal is to find games in which bettors can simultaneously be against the public (contrarian), with the professional bettors (sharp action) and on the same side as the house (who always wins in the end).

Shop for the Best Line

No matter what team you decide to bet on or against, it’s incumbent on you as a bettor to find the book offering the best odds. As bettors, we know that there is no such thing as a “lock.” We can never guarantee that a bet wins, but we can guarantee that we put ourselves in the best position possible to cash the ticket by finding the sportsbook offering the best number.

There are dozens of sports betting apps and, recently, prediction markets to choose from. The key is to open accounts at several different books so you can take advantage of the market opportunities available to you. By opening multiple accounts, you not only have more numbers to choose from, but you can also take advantage of sign-up bonuses and odds boosts. Remember, sportsbooks are fighting for your action, especially during the biggest sports betting event of the year.

To put this into perspective, let’s say you wanted to bet on North Carolina. One book shows North Carolina as a 5-point favorite (-5). However, another book is offering -4.5. Now, if the Tar Heels win by exactly five points, you cash your ticket and win your bet instead of pushing if you only had the option of taking the -5.

You can also get better juice prices. This is the tax or commission applied to every bet that bettors must pay the sportsbooks in order for them to accept our action. So, maybe every book is showing North Carolina -5. But one book shows North Carolina -5 (-115) while another is offering North Carolina -5 (-110). By shopping around and having multiple “outs,” you just earned yourself a better price, which increases your potential payout on the back end.

How to Create a Contrarian Bracket for March Madness College Basketball

Aside from wagering on individual games, March Madness College Basketball bettors also love filling out their bracket. Everyone loves participating, even your co-worker in the office who knows nothing about College Basketball.

Once the field is set on Selection Sunday, bettors then have a few days to fill out their bracket before the first round begins. Filling out the bracket is a personal endeavor, and everyone has their own distinct way of doing it. Some go off of “feel” while others spend hours dissecting and analyzing every matchup.

Regardless of your style, the key is to differentiate yourself from the masses. If you have the same bracket as everyone else, you are highly unlikely to win your office pool.

Here’s where going contrarian gets interesting.

Normally, everyone who receives a bracket starts on the outer edges, beginning with the Round of 64, then Round of 32, then Sweet Sixteen, Elite 8, Final Four and, finally, the Championship. They go game-by-game, picking the winner and working their way inward and picking their champion last.

If you want to differentiate yourself from the public and increase your chances of winning, you can create a Contrarian Bracket. This means starting in the middle (picking your champion first) and then working your way outward.

The key is that you need to pick a different champion than the crowd. Why? Because if that popular team wins, everyone has the same pick, and you are just like everyone else. However, if you pick a different champion that isn’t quite as popular and that team ends up winning it all, you are all but guaranteed to win your bracket.

To put this into perspective, Michigan and Duke are the co-favorites to win the 2026 NCAA Tournament at +330. It stands to reason that the vast majority of people who fill out a bracket will either have Michigan or Duke as their champion.

So, you need to pick a different champion in order to differentiate yourself. If Duke or Michigan win, so be it (plus the favorite doesn’t always win, that’s why it’s called “madness”). But if you correctly pick the champion, you are all but guaranteed to win your bracket or put yourself in a position to win money by finishing near the top.

So, picking a team like Arizona (+450) or Florida (+650) would be a good idea, as they have the 2^nd and 3^rd best odds, respectively. Or, maybe an outlier like Houston (+1200) or Connecticut (+1800).

Bet With Your Head, Not Your Heart

In the end, it’s no surprise why March Madness is such an exhilarating time for bettors. Instead of one single game like the Super Bowl, we get dozens of games to choose from spread over several weeks of competition. The opening two rounds are considered the most incredible four days on the sports betting calendar, as they offer all-day action with countless games starting at noon and going well past midnight. There will be epic upsets, brackets will surely be busted and Cinderellas will captivate the tournament.

Whether you’re looking to bet on a few games or just interested in filling out a bracket, try your best to bet with your head and not your heart.

If you’re betting on game, spend some time figuring out what the line opened at, which direction it moved and where the public and sharps are leaning based on the bet splits. Build a case for why you are betting on a team. Don’t just bet based on bias, gut instinct or favoritism. And when you’ve found a team worth backing, scour the market and find the sportsbook offering the best price.

In turn, if you want to fill out a bracket that makes you stand out amongst the masses, pick a different champion that the rest.

Lastly, whether it’s betting on individual games or filling out a bracket, don’t go crazy and spread yourself too thin by betting too many games or submitting dozens of brackets. Less is more.

Good luck and enjoy the Madness.

Title Image Credit: Photo by Erica Denhoff/Icon Sportswire via Getty Images