If you’ve ever heard coworkers arguing about their bracket or seen the term “Sweet 16” trending on social media every March, you’ve witnessed March Madness in action. But if you’ve never quite understood what all the fuss is about, you’re not alone — and you’ve come to the right place.
What Is March Madness?
March Madness is the nickname for the NCAA Division I Men’s Basketball Tournament — a college basketball championship held every spring in the United States. It’s one of the most-watched sporting events in the country, drawing tens of millions of viewers and generating over a billion dollars in advertising revenue each year.
The name “March Madness” was first used in a basketball context in 1939 by an Illinois high school official named Henry V. Porter. It didn’t become widely associated with the NCAA tournament until CBS broadcaster Brent Musburger used it during the 1982 tournament. The name stuck.
How Many Teams Are In It?
The tournament features 68 college basketball teams from across the United States. These teams are selected in two ways:
— Automatic bids: 31 teams earn a guaranteed spot by winning their college conference tournament. Win your conference, you’re in.
— At-large bids: The remaining 37 spots are awarded by a 12-member NCAA Selection Committee, which evaluates teams based on overall season performance and strength of schedule.
What Is Selection Sunday?
Every year, the 68-team bracket is revealed on Selection Sunday — a live TV event where teams find out if they made the tournament and where they’re seeded. In 2026, Selection Sunday took place on March 15. This is when millions of Americans sit down to fill out their brackets.
How Does the Bracket Work?
Once the 68 teams are selected, they’re divided into four regions: East, West, Midwest, and South. Each region has 16 teams, ranked from 1 to 16 — with 1 being the best team and 16 being the lowest. The matchups pit higher seeds against lower seeds first: #1 vs. #16, #2 vs. #15, and so on.
What Are the Rounds?
The tournament is single-elimination — one loss and you’re out. Here’s how it progresses:
— First Four: 68 teams down to 64 (March 17–18) — Round of 64: 64 down to 32 (March 19–20) — Round of 32: 32 down to 16 (March 21–22) — Sweet 16: 16 down to 8 (March 26–27) — Elite Eight: 8 down to 4 (March 28–29) — Final Four: 4 down to 2 (April 4) — National Championship: 2 down to 1 Champion (April 6)
The First Four consists of four play-in games held in Dayton, Ohio. The Sweet 16 and Elite Eight are played at neutral sites around the country. The Final Four and National Championship are held at Lucas Oil Stadium in Indianapolis in 2026.
What Is a Bracket?
A bracket is a visual chart showing every potential matchup in the tournament. Before the games begin, millions of fans fill out their own brackets by predicting who will win each game — all the way to the final champion. The odds of a perfect bracket are estimated at 1 in 9.2 quintillion. No verified perfect bracket has ever been recorded.
Why Is It Called “Madness”?
Because upsets happen constantly — and that’s the whole point. Lower-seeded underdogs — nicknamed Cinderella teams — routinely knock off heavily favored opponents. These upsets are what make March Madness must-watch TV, even for people who never follow college basketball the rest of the year.
Where Can You Watch It?
In 2026, all 67 games are broadcast across CBS, TBS, TNT, and truTV. Games are also available to stream on Paramount+ and HBO Max. A large smart TV makes the viewing experience much better for groups
Is There a Women’s Tournament Too?
Yes — and it’s growing fast. The NCAA Division I Women’s Basketball Tournament follows the same format: 68 teams, single elimination, and a Final Four. In 2026, the Women’s Final Four and championship game are being held in Phoenix, Arizona.
March Madness By the Numbers — 2026 — 68 teams enter — 67 total games played — 4 regions — 3 weeks of competition — Championship game: April 6, Indianapolis
Final Thoughts
March Madness is one of the most exciting events in American sports for a simple reason: anything can happen. Whether you’re a lifelong basketball fan or just filling out a bracket for the office pool, the NCAA tournament has something for everyone. Now that you know how it works — enjoy the madness. Inspired to play? A good basketball is all you need to get started.”