3-on-3 Basketball Rules: Gameplay and Tournament Guidelines

What Are the Basic Rules of 3-on-3 Basketball?

3-on-3 basketball is played on a half court with two teams of three players each, plus up to one substitute per team. The game uses a single hoop. The first team to score 21 points or the team leading after 10 minutes wins. Shots made inside the arc count as 1 point, and shots from outside the arc count as 2 points. The game begins with a coin toss; the winner can choose to take possession or start on defense. After a made basket or a dead ball, the ball must be checked (exchanged between a defender and an offensive player) at the top of the arc before play resumes.

How Is 3-on-3 Different from Regular Basketball?

The main differences are the smaller court (half court), fewer players, shorter game duration, and lower point values. There is no jump ball after the opening; instead, the team that did not start with the ball gets possession after the initial change of possession. The shot clock is 12 seconds, and after a defensive rebound or steal, the ball must be cleared beyond the arc before the offense can attack. There are no free throws for ordinary shooting fouls; teams get possession instead. Free throws are only awarded for shooting fouls on successful 2-point attempts, for technical fouls, and for team fouls 7, 8, and 9.

Official 3x3 Basketball Rules (Including FIBA 3x3)

FIBA 3x3 rules are used in international competitions and many organized tournaments. These rules specify a 10-minute game clock, a 12-second shot clock, and a 21-point win-by-two target. Overtime is a single period: the first team to score 2 points wins. The ball must be cleared (taken behind the arc) after every change of possession. Substitutions are allowed only during dead balls and before the check ball. Each team is allowed one 30-second timeout. Team fouls 1–6 result in a throw-in from the top; fouls 7, 8, and 9 result in two free throws for the offense; fouls 10 and more result in two free throws plus possession.

Key FIBA 3x3 Game Rules

• Scoring: 1 point inside the arc, 2 points outside.
• Game duration: 10 minutes or first to 21 points.
• Shot clock: 12 seconds.
• Clearance: After a defensive rebound or steal, the ball must be passed or dribbled behind the arc.
• Possession after made basket: The team that conceded the basket gets the ball; no inbound from under the basket.
• Fouls: No free throws for ordinary fouls; team fouls affect free throw awards.
• Overtime: First team to score 2 points wins.

Setting Up a 3-on-3 Tournament: Rules and Structure

For a group of friends, you can adapt official rules to suit your needs. Decide on game length (e.g., 10 minutes or first to 11 points), point values, and overtime. Use a bracket system for tournament play. Single-elimination is simplest: winners advance, losers are out. For more games, use pool play followed by a knockout round.

Example Bracket for 8 Teams (Single Elimination)

If you have an odd number of teams, use a round-robin or pool format to give everyone enough games. For 6 teams, you can split into two pools of 3; each team plays the other two in its pool, then top teams advance to semifinals.

Planning a Realistic Schedule

Each game typically lasts 15–25 minutes including warm-up, breaks, and potential overtime. A 10-minute running clock game with no stops can finish in 15 minutes. Reserve 20 minutes per game slot to be safe. For a 4-team single-elimination tournament with three games, you need about 60–75 minutes. With 8 teams, allow 2–3 hours for the whole event. Build in 5–10 minute breaks between rounds.

Make the next round clear: post a printed bracket, announce upcoming games, and have a central table where teams check in.

Printable Rules Sheet and Additional Resources

A one-page rules sheet is useful for players and referees. Include the key rules: scoring, game duration, shot clock, clearing, fouls, and overtime. You can create a PDF from a simple document. Distribute it before the tournament and keep copies at the scorer’s table.

Sample rules: Game to 15 points or 12 minutes; 1 point for any basket (simplified); no shot clock; after a rebound, clear by passing beyond the free-throw line. This keeps the game flowing for casual players.

Remember, the goal is fun and fair play. Clearly explain any modifications before the first game.