How to Run a 3-on-3 Basketball Tournament
A guide to running a 3x3 basketball tournament — the rule differences from 5v5 (court size, shot clock, scoring, roster size), format and scheduling considerations, and how pool play fits 3x3 especially well.
3x3 Isn't Just Smaller 5v5 — the Rules Genuinely Differ
3-on-3 basketball, as codified by FIBA 3x3, has real rule differences from standard 5v5 basketball, not just fewer players on a smaller court. Games are played on a half-court with a single basket, using a smaller ball size in official FIBA play (though many recreational and youth tournaments use a standard ball), and games are typically won by reaching a target score (commonly 21) or by having the higher score when a time limit expires — not by playing four full quarters. Anyone hosting a 3x3 event needs to set these rules explicitly in advance, since the format is different enough that assuming players and coaches already know the rules will cause real confusion on game day.
Court Size and Setup
A regulation FIBA 3x3 court is a half-court roughly 15m x 11m (about half a standard full court), using only one basket rather than the two ends a 5v5 game uses. This means a single full-size gym can host two or more 3x3 games simultaneously — one on each half — which is one of the biggest scheduling advantages 3x3 has over 5v5 for a tournament with limited court time. If you don't have access to true half-court setups, a full court can be divided with cones or tape to mark two separate 3x3 playing areas, though player safety around the shared mid-court boundary needs a clear rule (usually: ball is dead if it crosses into the other game's space).
Scoring: 1s and 2s, Not 2s and 3s
3x3 scoring differs from 5v5 in a way that trips up a lot of first-time participants: shots inside the arc are worth 1 point (not 2), and shots from beyond the arc are worth 2 points (not 3). This flatter scoring system, combined with a shorter shot clock (commonly 12 seconds in FIBA 3x3, though many recreational tournaments use a longer or no shot clock), rewards fast, decisive possessions over the slower half-court sets common in 5v5. Post the scoring rule clearly at every court — it's the single most common source of scoring disputes at a first-time 3x3 event.
Roster Size and Substitutions
A 3x3 team is typically 3 players plus one substitute (4 total on the roster), with substitutions happening on the fly during a dead ball rather than through a formal substitution process — there's no bench rotation system like 5v5. Because rosters are so small, 3x3 is an accessible format for players who don't have a full 5v5 team assembled, and it's common for tournaments to accept pickup or mixed-club teams that wouldn't otherwise field a full 5-on-5 roster.
Why Pool Play Fits 3x3 Especially Well
Because 3x3 games are short (often 10 minutes or first-to-21, whichever comes first) and games run in parallel on shared courts, round-robin pool play scales much better for 3x3 than it does for 5v5 — a full round robin within a 4-6 team pool can be completed in an hour or two rather than a full day, since each individual game takes a fraction of the time a 5v5 game does. This makes 3x3 tournaments a strong fit for a single-day event with many small pools running simultaneously, each pool feeding into a short elimination bracket for placement.
Building Your 3x3 Schedule and Format
Because game length is so short, calculate your schedule around actual playing time plus a fixed changeover buffer (commonly 2-5 minutes between games) rather than the longer buffers a full 5v5 game needs. Group age or skill divisions into their own pools rather than mixing them, since 3x3's flatter scoring and shorter clock can make skill mismatches feel even more lopsided than in 5v5. Once pool play wraps, a short single-elimination bracket for placement — often completed same-day given how fast 3x3 games run — is the standard way to close out the event.
Frequently asked questions
In 3x3, shots inside the arc are worth 1 point and shots from beyond the arc are worth 2 points, instead of the 2-and-3-point scoring used in standard 5v5 basketball.
A standard 3x3 roster is 3 players plus one substitute (4 total), with substitutions happening on the fly during a dead ball rather than through a formal bench rotation.
3x3 is played on a half-court, roughly 15m by 11m in regulation FIBA play, using a single basket rather than the two ends a full 5v5 court uses.
Because 3x3 games are short and multiple games can run in parallel on shared half-courts, a full round robin within a small pool can be completed in a fraction of the time it would take in 5v5, making it practical to run entire pools in a single day.
Put it into practice
SixSevenBall gives you the drills, practice plans, and play designer to run everything in this guide — free to start.