NBA: Structure, Rules and Facts About the Most Famous Basketball League in the World

The NBA is the professional basketball league of the United States: 30 teams split into two conferences, 82 games of regular season from October to April, then the play-in and knockout playoffs all the way to the Finals in June, where the Larry O'Brien trophy is handed out. The rules are different from the FIBA ones you're used to: 12-minute quarters instead of 10, six fouls instead of five, a three-point line that sits further out.

Below you'll find everything you need to understand the league: how it started, how the season works, what changes compared to European basketball and why athleticism — vertical jump included — has become the real entry filter.

How the NBA started

The league was born in 1946 under the name Basketball Association of America (BAA). In 1949 the BAA merged with the National Basketball League and took the name we know today: National Basketball Association.

Over the following decades the league went from a local phenomenon to a global product. The games are watched all over the world, the rosters filled up with European, African, South American and Oceanian players, and the league became a cultural reference point, not just a sporting one.

How the NBA season is structured

Regular season

Every team plays 82 games, spread roughly from late October to April. Half at home, half on the road. It's a very long season, with packed schedules and trips across several time zones: managing load and recovery counts as much as talent.

In February the season stops for the All-Star Weekend, the weekend with the All-Star Game, the three-point contest and the dunk contest.

Play-in

Before the playoffs proper comes the play-in tournament: the teams ranked seventh to tenth in each conference face off to decide the last two seeds. It's a relatively recent addition and it keeps more teams alive until the end of the regular season.

Playoffs

8 teams per conference make the playoffs. Every round is a best of seven games (4-3 series), in a 2-2-1-1-1 format: the better-seeded team has home court advantage in game 7.

The Finals and the Larry O'Brien trophy

The two conference winners meet in the NBA Finals, in June. Whoever wins lifts the Larry O'Brien Championship Trophy, and a Finals MVP is voted as well. Going all the way means adding up to four seven-game series to a season that's already 82 games long: holding up physically is as much a part of the title as shooting.

The 30 teams and the two conferences

The franchises are split into two conferences of 15 teams each, and each of those is split into three divisions:

• Eastern Conference — Atlantic, Central, Southeast
• Western Conference — Northwest, Pacific, Southwest

The geographic split isn't a detail: it shapes the schedule, the number of head-to-head games and how much travel a team takes on over a season.

What changes between the NBA and the FIBA rulebook

If you play under FIBA rules, these are the main differences you notice watching an NBA game:

• Quarter length: 12 minutes in the NBA, 10 in FIBA. An NBA game runs 48 actual minutes, a FIBA one 40.
• Personal fouls: in the NBA you foul out on the sixth, in FIBA on the fifth.
• Three-point line: in the NBA it's further out (about 7.24 m at the top of the arc, 6.70 m in the corners) than in FIBA (6.75 m and 6.60 m in the corners).
• Zone defense: the NBA has the defensive three seconds rule, which stops a defender from parking in the paint without guarding anyone. FIBA doesn't have this rule.
• 24-second shot clock: the same in both rulebooks, with a reset to 14 seconds after an offensive rebound.

On the floor it means more spacing, more one-on-one and more pace in the NBA. And that's one of the reasons explosiveness matters so much.

The names that made history

The league has produced some of the most iconic careers in world sport. Among the names that come up whenever people talk legends:

• Michael Jordan — six titles with the Chicago Bulls and six Finals MVPs.
• Kareem Abdul-Jabbar — six-time regular season MVP, and for decades the all-time leading scorer.
• LeBron James — passed Abdul-Jabbar as the all-time regular season scoring leader.
• Wilt Chamberlain — the man behind the famous 100-point game in 1962.
• Larry Bird and Magic Johnson — the rivalry that brought the league's popularity back in the Eighties.

Show, culture and merchandising

The NBA doesn't only sell games. Music, fashion, sneakers, documentaries: the league moved into pop culture and stayed there. You see franchise jerseys on the street far more than in the arenas, and that has pulled in an audience well beyond the people who follow the game itself.

For a player that has a practical upside: there's a huge amount of video out there. Watching how the pros move — approach steps, use of the arms, landings — is a free way to work out what you're getting wrong.

How much the vertical jump matters in the NBA

At the top level, jumping isn't only for dunking. It's for grabbing a contested rebound, for blocking, for shooting over a taller defender, for finishing through contact on a drive. And above all you need it repeated: in a game you jump dozens of times, not once.

That's why training your vertical isn't just about doing jumps. It has three components: strength (how much you produce), speed (how quickly you express it) and elastic stiffness (how much you give back on ground contact). A serious program trains them in order, not all at once at random.

First you measure, then you train, then you measure again

The most common problem for people training to jump higher is that they don't know where they're starting from. Without a first number you can't tell whether the work you're doing is paying off or you're just piling up fatigue.

On the site there's a free jump test: you upload a two-second video, the system works out the height in centimetres from your flight time and gives you the number. The video never leaves your device. Take the test today, repeat it after a few weeks of work and compare the numbers: it's the only honest way to know if you're improving.

JHP programs for basketball players

• Basket Advanced — the package built for basketball players, €80.
• Jump Higher Program — 10 weeks of bodyweight jump work, €60. It's the starting point if you don't have access to a weight room.
• JHP Gym Edition — 16 weeks in the weight room on maximal strength and power, €60.
• Jumping Monster — 14 days of intensive plyometrics with 116 exercises, €40.
• Knee Power — work on the knees and on jumper's knee, €40. Useful if your knee bothers you after training.

If you'd rather have everything together, the JHP subscription gives you access to 13 programs for €99 a year, with WhatsApp support and free cancellation. You can also look at all the courses and pick a single one.

You might also like: How high do NBA players jump? · Types of dunk to take inspiration from