🥋 OSS UP Official Rulebook (English Version)
Tiếng Việt: Oss Up Rules and Regulation VN | TheGIS 

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1. Match Format & Duration

• White Belt: 5 minutes
• Blue Belt: 6 minutes
• Purple Belt: 7 minutes
• Each match will be officiated by 1 head referee.
• Format: Gi (BJJ uniform).

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2. Weight Classes

The weight divisions are as follows:

1. Rooster: under 57.5kg
2. Light Feather: 57.5 – 64kg
3. Feather: 64 – 70kg
4. Light: 70 – 76kg
5. Middle: 76 – 82.3kg
6. Medium Heavy: 82.3 – 88.3kg
7. Heavy: 88.3 – 94.3kg
8. Super Heavy: 94.3 – 97.5kg
9. Ultra Heavy: over 97.5kg

Weigh-in Procedure

• Athletes must weigh in wearing their full Gi and a rashguard underneath.
• If the athlete fails to meet the weight limit, they will not be allowed to compete in the main bracket, and will instead be placed in the DQ Bracket, reserved for all competitors who miss weight (Absolute). 
• If the athlete does not make weight on the first attempt, they may re-weigh as long as it is within the designated weigh-in time frame.
• Weigh-in time: 26/10/2025 From 7:00 AM – 9:00 AM.

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3. Bracket Format & Regulations

3.1 Bracket System

OSS UP applies the Second Chance – Double Elimination format (Winner’s Bracket & Loser’s Bracket).

• Athletes who lose their first match are placed in the Loser’s Pool.
• Winners in the Loser’s Pool may still advance to compete for Gold Medal.
• Each athlete is guaranteed at least 2 matches.

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Bracket Seeding Criteria

Priority order for division seeding:

1. Belt rank
2. Weight class
3. Age group

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Handling Cases with Limited Participants

If there are no athletes in the same belt, weight, or age group, the Organizing Committee (OC) will contact the athlete to arrange the best option. If no opponent is available → the athlete may either receive the medal or request a refund.

3.1.1 No same weight class

• Priority: move the athlete up to the next heavier division.
• If already in the heaviest weight class with no opponent → the athlete may agree to compete with a lighter weight division.
• If no agreement is reached, the OC may cancel the entry and issue a refund.

3.1.2 No same age group

• The athlete will be grouped with the closest available same belt + weight division.

3.1.3 No same belt

• If no opponent is available → the athlete may either receive the medal or request a refund.
• If only one opponent can be arranged → match will be Best of 3 (first to win 2 matches is declared winner).

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3.2 Bracket Structures

1 Person Bracket:

Automatically merged with the next available division.

2 Persons Bracket: Best of 3 (first to 2 wins).

3 Persons Bracket:

Double Elimination format.

4 Persons Bracket:

5 Persons Bracket:

6 Persons Bracket:

7 Persons Bracket:

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4. Scoring System

4.1 Technical Points

2 points:

• Takedown
• Sweep
• Knee on belly

3 points:

• Guard pass (maintained for 3 seconds)

4 points:

• Mount
• Back control (with hooks in)

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4.2 Advantage

• Nearly completing a scoring technique but unable to hold for 3 seconds.
• Almost completing a submission that places the opponent in clear danger, but the opponent escapes.
• If tied in points, the athlete with more advantages wins.

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4.3 Penalties

• Minor fouls (stalling, avoiding combat, improper grip pulling, etc.) → 1 penalty.

Penalty accumulation:

• 1st penalty = Warning
• 2nd penalty = Opponent receives 1 advantage
• 3rd penalty = Opponent receives 2 points
• 4th penalty = Disqualification

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4.4 Match Outcomes

• Submission Victory: Opponent taps, loses consciousness, or cannot continue.
• Points Victory: Athlete with more points at the end of regulation wins.
• Tied Match: Decision by advantages → penalties → referee’s judgment (based on aggression and dominance).

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5. Fouls & Prohibited Techniques

🔴 Severe Fouls – Direct Disqualification

Actions that result in immediate DQ:

• Gi torn/damaged and not replaced within time allowed.
• Deliberately fleeing the mat to avoid submission.
• Committing a foul during a submission attempt to force a referee stoppage.
• Faking a reaction to cause opponent disqualification.
• Not wearing proper undergarments under Gi.
• Applying oil, cream, gel, slippery or sticky substances.
• Strangling with bare hands or pressing thumb/fingers into the windpipe.
• Blocking opponent’s breathing (covering nose/mouth).
• Defending single-leg (head outside) by lifting belt and spiking opponent’s head.
• Suplex that causes opponent’s head/neck to hit the mat.

• Suplex is only allowed if the opponent’s head/neck does not touch the ground.

• Using prohibited techniques for their division (based on belt/age table).

👉 OSS UP highlights 4 key Severe Fouls:

1. Fleeing the mat to avoid submission.
2. Strangling with bare hands / blocking airway.
3. Suplex with head/neck impact.
4. Performing prohibited techniques per division.

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🟠 Serious Fouls – Cumulative Penalties

Handled under the 4-step penalty system:
1st: Warning → 2nd: Advantage to opponent → 3rd: +2 points to opponent → 4th: Disqualification.

Examples of Serious Fouls:

• Sitting/kneeling or pulling guard without grip.
• Standing and fleeing outside the mat to avoid combat.
• Sliding outside the mat to avoid ground combat.
• Standing up to avoid combat without re-engaging.
• Breaking guard grip without re-engaging.
• Intentionally removing Gi or belt to stop match.
• Inserting fingers inside sleeves/pants.
• Grabbing inside the Gi jacket/pants.
• Talking or gesturing to contest referee’s decision.
• Ignoring referee commands.
• Leaving the mat before the referee declares the result.

6. OSS UP: FIRE FANG CLASH 2025 – EVENT SCHEDULE

📅 Date: 26/10/2025
📍 Venue: Gisdio – Đặng Dung
⏱ Estimated Duration: 6.5 hours (7:00 – 13:30)
Registration at: OSS UP 3 - Fire Fang Clash

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7:00 – 9:00 | Guest Reception & Weigh-In

• Welcome guests – Official Weigh-In
• Event check-in & gift collection
• Sign the waiver form
• 8:30 – 8:50: Referees’ briefing (20 minutes)

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9:00 – 9:30 | Program & Rules Briefing

• Prohibited techniques & penalties
• Scoring method
• Special situations (Crank, Twist, Reap, Slam)
• Bracket 

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9:30 – 12:30 | Event Begins

• Activities run on two mats simultaneously, with no scheduled breaks
• Certificates presented after the first rounds in each bracket

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12:30 – 13:00 | Closing Ceremony

• Medal - Podium
• Group photo 

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13:00 – 13:30 | Venue Cleanup

• General cleanup before departure.

7. Final words

Thank you for taking the time to read the OSS UP Rule and Regulation.
This rulebook was jointly ratified by the following 8 teams on September 14, 2025:
Team Shark, Gisdio, Over Limit, Arkain Grappling, Team Flow, Primal – Performance Lab, Jiboia, Midway Jiu-Jitsu Club.

For any questions or clarifications, please contact us via:

Facebook: www.facebook.com/thegisshop
Email: info@thegis.asia
 

Registration at: OSS UP 3 - Fire Fang Clash

OSS.