Ensure you never get disqualified at tournament check-in. Calculate your precise tournament division with Gi allowances and master the points & illegal submissions matrix.
Remember: In IBJJF, you step on the scale with your Gi and Belt on immediately before your first match.
Taking opponent from standing down to the mat and establishing 3-second top control.
Reversing position from bottom guard to top position and maintaining control for 3 seconds.
Placing knee across opponent abdomen with chest up and other leg posted for base.
Overcoming opponent’s legs/guard and securing chest-to-chest or side control for 3 seconds.
Sitting on opponent’s torso with both knees touching the mat for 3 continuous seconds.
Controlling opponent’s back with both heel hooks placed inside their thighs (no crossed feet).
| Technique / Lock | White Belt | Blue & Purple | Brown & Black | ADCC No-Gi |
|---|---|---|---|---|
| Straight Ankle Lock | ✓ Legal | ✓ Legal | ✓ Legal | ✓ Legal |
| Wristlocks | ✗ Illegal | ✓ Legal (Blue+) | ✓ Legal | ✓ Legal |
| Toe Holds & Kneebars | ✗ Illegal | ✗ Illegal | ✓ Legal (Brown+) | ✓ Legal |
| Inside/Outside Heelhooks | ✗ Illegal | ✗ Illegal | No-Gi Only | ✓ Legal |
| Kani Basami (Scissor Takedown) | ✗ DQ Foul | ✗ DQ Foul | ✗ DQ Foul | ✓ Legal |
The IBJJF's gi-on weigh-in is deliberate: weighing in fully dressed close to match time makes it much harder to cut weight the night before and rehydrate back up, a tactic that used to give heavier-framed competitors an unfair edge in a lighter bracket. Building a small gi allowance into your target weight, rather than trying to hit your bare bodyweight limit exactly, protects you from a surprise disqualification at check-in.
Scoring inside a match runs on two separate tracks: points and advantages. Points come from the specific actions in the matrix above — takedowns, sweeps, guard passes, and dominant positions like mount and back control — and only count once you have held the position long enough to satisfy the referee's control requirement. Advantages are a secondary tiebreaker awarded for a near-successful attempt that did not quite meet the points threshold, such as an almost-finished submission or a takedown you could not fully control. If both competitors finish with equal points, the match is decided by advantages, then by the referee's judgment of overall dominance.
Submission legality is where beginners get caught out most often. A move can be completely legal at black belt and an automatic disqualification at white belt — heel hooks and knee reaping are the clearest example, restricted at every belt below black even in no-gi IBJJF events, while ADCC and most standalone no-gi tournaments permit them earlier. Always check the specific rule set for the tournament you are entering rather than assuming last year's rules still apply — the IBJJF updates its rulebook periodically, and gi and no-gi divisions do not always share identical restrictions.
If you are still building toward these belt-specific submission windows, our belt system guide breaks down what changes technically and administratively at each rank, and our technique library covers the mechanics and legality notes for individual submissions like the heel hook, toe hold, and wristlock in more depth.
Yes — IBJJF competitors step on the scale wearing their full gi and belt immediately before their first match, not at a separate bare-bodyweight check-in the day before.
The referee looks at advantages first. If those are also tied, the win goes to whichever competitor the referee judges to have been more dominant or aggressive over the course of the match.
Not below black belt. Heel hooks and knee-reaping positions stay restricted through brown belt in IBJJF gi divisions, while organizations like ADCC and most standalone no-gi events allow them earlier — always confirm the specific tournament's rule set rather than assuming.