March Madness Preview: Everything to Know

Few sporting events in the United States generate the kind of attention that the NCAA basketball tournament does every spring. Known simply as "March Madness," the tournament is a single-elimination competition featuring 68 college teams competing for a national championship over three weeks. Teams earn their spot either by winning their conference tournament for an automatic bid or by earning an at-large berth based on their full body of work.

The nickname predates the NCAA’s adoption of the term, first appearing in 1939 when Henry V. Porter used it to describe the Illinois high school basketball state tournament. It did not become associated with the college game until CBS broadcaster Brent Musburger used it during a 1982 NCAA tournament broadcast. Since then, the men’s tournament has grown from an eight-team field to 68 teams, while the women’s championship has used a 68-team bracket since 2022.

How does March Madness work?

Any solid March Madness preview starts with understanding how the bracket is built. Both the men’s and women’s tournaments have 68-team fields, made up of 31 automatic qualifiers and 37 at-large selections chosen by separate NCAA committees. Those committees seed all 68 teams into four regions from No. 1 to No. 16, creating the classic opening-round matchups between the highest and lowest seeds.

Selection Sunday and Seeding

Selection Sunday marks the start of March Madness for most fans. Once the full field is chosen, the NCAA locks in a complete bracket path in which every team's next opponent is determined solely by winning and advancing. Automatic bids are straightforward: they go to conference tournament winners.

The real debate centres on the at-large spots, which the committee fills after evaluating each team’s full body of work through multiple rounds of discussion and voting.

The seeding process runs through an S-curve, or true seed list, that ranks all 68 teams. The committee then goes back through that list to re-compare teams close in ranking before finalizing the bracket placement.

Among the main public-facing tools are the NCAA’s NET ranking and quadrant records, but the committee evaluates the full team sheet rather than relying on one number alone. Game location matters, so a quality road win can be valued differently from a similar home win when at-large spots are tight.

Once seeding is done, placement within the bracket follows additional principles beyond seed number alone. The committee accounts for competitive balance, geographic factors, and conference matchup restrictions that limit when teams from the same conference can face each other based on how often they met during the season. For anyone new to the tournament, here is how the rounds break down from start to finish:

• First Four: Eight teams play opening-round games to trim the field from 68 to 64
• First Round (Round of 64): 64 teams play, 32 advance
• Second Round (Round of 32): 32 teams play, 16 advance
• Sweet 16: The regional semifinals
• Elite Eight: The regional finals
• Final Four: The last four teams meet in the national semifinals
• National Championship: The final game crowns the champion

March Madness Terms to Know

Before diving deeper into how the tournament works, here are some important terms worth knowing so the rest of your March Madness Preview makes complete sense.

The Bubble

The bubble refers to the uncertain territory where teams sit when they are not guaranteed an at-large spot but have not been ruled out either. These are programs whose season results were good enough to stay in the conversation but not convincing enough to feel safe.

The talk around bubble teams usually focuses on the "last four in" and the "first four out," meaning the teams right on the edge of making the field. A surprise winner in a conference tournament can take an automatic bid and knock a bubble team out entirely, which is why Selection Sunday carries so much tension.

Chalk

Chalk is a betting term for the favourite, and during March Madness, it's used a lot during bracket season. When someone says a pick is "the chalk," they mean it is the expected outcome based on seeding and reputation.

A chalky bracket is one in which higher seeds keep winning, and few upsets occur. Most bracket pools end up being heavily chalk early on, because picking against top seeds in the first round feels risky even when upsets happen regularly.

Cutting Down the Nets

After winning a championship, the winning team climbs the ladder and cuts the net down from the rim as a celebration. It is one of the most iconic images in college basketball and something every player and coach dreams about.

The tradition is widely traced back to coach Everett Case, who did it after a 1947 conference title win. Since then, it has become a signature moment at every level of the sport, and watching it happen at the end of the national championship game is part of what makes March Madness feel different from a regular-season win.

One Shining Moment

"One Shining Moment" is a song written by David Barrett that plays over a highlight montage at the very end of the national championship broadcast. It captures the full tournament in a few minutes, showcasing the best plays, emotions, and moments that defined that year's run.

It was first used in 1987 and has been a closing tradition for the men's tournament ever since, with notable versions recorded by Luther Vandross, among others. For many fans, hearing that song is the moment the tournament truly feels over.

Common March Madness Betting Markets

Any worthwhile March Madness Preview covers the betting markets, because understanding what each wager means makes the tournament far more engaging to follow. Here are the most common markets you will come across when betting on the tournament.

Moneyline

A moneyline bet is the simplest wager you can place, requiring you to pick which team wins the game outright. There is no point handicap involved, just a straight win or lose outcome with odds assigned to each side.

The favourite will have lower odds since they are expected to win, while the underdog pays out more to reflect the higher risk. For casual bettors, the moneyline is usually the easiest starting point.

Point Spread

Spread betting levels the playing field between mismatched teams by giving the favourite a points handicap. For a favourite to cover the spread, they need to win by more than that number, while an underdog bet wins if the team either wins outright or loses by fewer points than the line.

In March Madness, spreads matter because upsets are common and heavy favourites do not always cruise to comfortable wins. A team can win the game but still fail to cover if the margin is smaller than expected.

Totals (Over/Under)

A totals bet focuses on the combined score of both teams rather than who wins. The sportsbook sets a total, and bettors choose whether the final score finishes over or under it.

This market is popular in March Madness because tournament games can vary wildly in pace, with some turning into half-court battles and others into track meets. It gives you a way to bet on the feel of a game without picking a winner.

Futures

A futures bet is a long-term wager placed on an outcome that will not be decided until later in the tournament or at the very end. Common examples include betting on a team to win the national championship, make the Final Four or win its region.

Futures tend to offer bigger payouts because of the uncertainty involved, but your money is also tied up for the duration of the tournament. Locking in a price on a strong team early, before the bracket is fully set, can sometimes offer better value than waiting.

Parlays

A parlay combines multiple individual bets into one wager, with the potential for a larger payout than placing each bet separately. The catch is that every leg in the parlay has to win for the ticket to cash.

One loss anywhere in the parlay wipes out the entire wager. They are a popular way to chase bigger returns during the first round when there are many games to choose from, but the risk increases with every pick added.

Prop Bets

Prop bets, short for proposition bets, focus on specific events or statistical outcomes within a game rather than the final result. Examples include a player’s points total or which team scores the first basket.

They are a way to stay engaged with individual matchups beyond just picking a winner. In March Madness, player props can be especially interesting when standout players from mid-major programs face power-conference opponents.

Live Betting

Live betting allows you to place wagers while a game is already in progress, with odds updating in real time as the action unfolds. It opens up opportunities that simply did not exist before tip-off.

A team might fall behind early and see its odds shift significantly, creating value if you think it can rally. March Madness is made for live betting because college basketball is a game of runs and tournament games rarely follow a clean script.