3x3 Basketball vs Basketball (NCAA Men) — Same Game, Different Rules
Same sport, different leagues. See exactly where FIBA and NCAA rules diverge.
| Attribute | 3x3 Basketball | Basketball (NCAA Men) |
|---|---|---|
| Category | Team Sports | Team Sports |
| Organization | FIBA | NCAA |
| Players | 3–6 | 5 |
| Location | outdoor | indoor |
| Season / Version | FIBA Official 3x3 Basketball Rules (current edition — half-court, 12-second shot clock, 21-point target, Olympic-format) | 2025-26 NCAA Men's Basketball Rules Book (two-halves format, 30-second shot clock, coaches' challenge, media-timeout structure) |
| Verification | 🏛️Official — FIBA | 🏛️Official — NCAA |
Comparison Summary
3x3 Basketball and Basketball (NCAA Men) share 16 rule topics. All 16 have different rules.
Key differences in: Concussion Protocol, Court Dimensions, Free Throws, Officials, Other Violations and 11 more.
These sports also have 3x3 Basketball is outdoor, Basketball (NCAA Men) is indoor; different player counts.
Shared Rules — Side by Side(16 shared topics)
Concussion Protocol
Rules differFIBA follows the IOC consensus on concussion in sport: any player with a suspected concussion is removed from play and is subject to a graduated return-to-play assessment before being cleared for subsequent competition. Match-day diagnosis is the ...
NCAA medical observers and team medical staff have authority to remove a player from the game for actual or suspected concussion. Removed players are subject to a graduated return-to-play assessment before being cleared for subsequent competition.
Court Dimensions
Rules differSingle half-court, 15 m wide × 11 m long (approximately 49 ft × 36 ft); One basket at the end opposite the check-ball restart area; 3-point arc at 6.75 m from the basket (matches FIBA 5-on-5)
Rectangular court, 94 feet long × 50 feet wide (28.65 m × 15.24 m); Painted lane (key): 12 feet wide × 19 feet from baseline to free-throw line; Three-point arc: 22 feet 1.75 inches from the center of the basket (NCAA men's distance — expanded from 20'9" in 2019)
Free Throws
Rules differEach successful free throw is worth 1 point.
Personal fouls in the act of shooting: free throws are awarded as in 5-on-5 basketball; Free throw outside the arc: 2 free throws; Free throw inside the arc: 1 free throw
Officials
Rules differOne or two on-court referees; Scorer/timekeeper at the table; Shot-clock operator
Three-person on-court crew (referee, two umpires) for NCAA D1 games; Scorer, timekeeper, shot-clock operator at the scorer's table; Video-replay official for designated reviewable situations
Other Violations
Rules differTraveling: same standard as 5-on-5 basketball; loss of possession; Double dribble: same standard as 5-on-5; loss of possession; Out of bounds: ball awarded to opposing team at check-ball area
Traveling, double dribble, carrying, goaltending, basket interference; Out of bounds: ball awarded to the opposing team at the point closest to where it went out; 5-second closely-guarded, 10-second backcourt, 3-second lane violations
Personal Fouls
Rules differPersonal fouls in 3x3 are tracked at the team level (not per-player); Up to 6 team fouls per game are non-bonus fouls; Starting with the team's 7th, 8th, and 9th team foul, the opposing team shoots 2 free throws
A player is disqualified ("fouls out") after committing 5 personal fouls; Common personal fouls: blocking, charging, pushing, holding, hand-checking, illegal screen; Shooting fouls: 2 or 3 free throws depending on the foul location; and-one if the basket counts
Player Apparel
Rules differTeam uniform with each player wearing the same color top; Numbered jerseys (numbers 1-99); numbering must be distinct within the team; Shorts
Team uniform (jersey + shorts) with school logo and numerals; Jersey numbers must be unique within the team; legible at the scoring table; Athletic shoes appropriate to hardwood/synthetic indoor surface
Section 2: Equipment
Rules differSize 6 (28.5 inches / 72.4 cm circumference) — sized between a women's 5-on-5 ball and a men's 5-on-5 ball; Weight equivalent to a men's 5-on-5 basketball (approximately 580-620 g); FIBA-approved 3x3 ball with grooved grip pattern designed for outdoor use
Men's ball: size 7, circumference 29.5 inches (74.9 cm), weight 22 oz (623 g); NCAA-approved/NFHS-spec leather or composite cover; orange color standard; Basket: 18-inch diameter ring at 10 feet (3.05 m) height
Section 3: Playing Area
Rules differThe check-ball restart area is the top of the arc at the half-court line opposite the basket. After a made basket and on out-of-bounds restarts in specific scenarios, the offensive team takes the ball at the check-ball spot and passes it to a defe...
Team bench seating along one sideline with the scoring/timing table opposite. Coach's box defined for the head coach with a 28-foot designated coaching area extending from the baseline.
Section 4: Players & Officials
Rules differ3x3 is unique among FIBA disciplines in that coaches are not permitted on the bench during play in standard FIBA 3x3 competition — the players themselves manage strategy, substitutions, and timeout...
NCAA men's basketball uses a coaches'-challenge framework allowing a head coach to request video review of designated reviewable situations (out-of-bounds calls in the last 2 minutes, basket interf...
Section 5: Rules of Play
Rules differIf the game is tied at the end of regulation (neither team reached 21 before time expired and both have equal points), untimed overtime is played: the first team to score 2 points in overtime wins. There is no overtime clock; play continues from t...
The game begins with a jump ball at the center circle. Subsequent jump-ball situations are resolved by the alternating-possession rule — the arrow indicates which team gets possession.
Section 6: Scoring
Rules differEach successful free throw is worth 1 point.
Field goal inside the three-point arc: 2 points; Field goal beyond the three-point arc: 3 points; Free throw: 1 point
Section 7: Violations & Penalties
Rules differIf the offensive team fails to attempt a rim-contacting shot within 12 seconds, the defensive team gains possession at the check-ball area.
A player is disqualified ("fouls out") after committing 5 personal fouls; Common personal fouls: blocking, charging, pushing, holding, hand-checking, illegal screen; Shooting fouls: 2 or 3 free throws depending on the foul location; and-one if the basket counts
Section 8: Safety Considerations
Rules differFIBA follows the IOC consensus on concussion in sport: any player with a suspected concussion is removed from play and is subject to a graduated return-to-play assessment before being cleared for subsequent competition. Match-day diagnosis is the ...
NCAA medical observers and team medical staff have authority to remove a player from the game for actual or suspected concussion. Removed players are subject to a graduated return-to-play assessment before being cleared for subsequent competition.
Shot Clock
Rules differ12-second shot clock — the offensive team must attempt a shot within 12 seconds of gaining possession; A shot must hit the rim to satisfy the shot clock; an air ball that misses the rim entirely is a shot clock violation; The shot clock resets on a change of possession and on offensive rebounds
30-second shot clock (reduced from 35 in 2015-16 season); Resets to 30 on change of possession; resets to 20 on offensive rebound (since 2018-19); The team in possession must attempt a shot that contacts the rim before the shot clock expires; failure is a shot-clock violation
Team Composition
Rules differEach team has a roster of 4 players total; 3 players on the court at any time; 1 substitute available throughout the game
5 players on the court per team at any time; Roster: typically 13-15 players for NCAA D1 men's basketball; Substitutions: unlimited, made at dead-ball stoppages on the scorer's signal
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