According to the US Grappling rules, the only time "time in belt" counts is in No-Gi competitions.
Adult and 30+ No Gi Skill Levels
Skill levels are determined by time spent training in any comparable grappling art. Any wrestler with extensive experience (3 or more years in high school, or any collegiate experience) must enter at least intermediate no-gi. Judo, Sambo, and MMA experience count the same as BJJ.
Adult Divisions (Men and Women)
Novice: Up to 9 months (white belts only).
Beginner: Up to 2 years (white belts only).
Intermediate: 2 – 5 years, or blue belt.
Advanced: Over 5 years, or purple belt and above.
30+ Men
Beginner: Up to 2 years (white belts only).
Intermediate: 2 – 5 years, or blue belt.
Advanced: Over 5 years, or purple belt and above.
Juvenile (ages 4-17) Weight Classes
Brackets for competitors aged 4-17 are made using the Madison Bracketing System. There are no preset weight classes for children and teens. At the end of weigh ins, the children and teens will be sorted by weight. Brackets will then be made by grouping them into sets of 4 or 8 (depending on turnout). Juveniles will be divided by weight, experience, and age (whenever possible). Using the Madison system means children and teens will no longer cut weight since they won’t know the weight classes in advance.
Juvenile (ages 4-17) Skill Levels
Beginners: Up to one year of training any grappling art.
Intermediate: Up to three years of training any grappling art.
Advanced: Over three years training any grappling art.
Any Juvenile that has been awarded a blue belt (adult level) must compete in the Juvenile Advanced skill level, regardless of time training. Juvenile blue belts can also compete in the adult blue belt and adult intermediate or advanced no gi divisions.
Juvenile division skill levels are commonly combined. US Grappling manually creates juvenile divisions, and sorts competitors by age and weight, and then by skill to ensure that matches are safe for all competitors.
That said, the techniques that can be used are limited by belt. For example, for BJJ Gi competition:
- The only submission below the waist that is legal for white, blue, and purple belts are straight ankle locks (AKA straight footlock).
- Kneebars, figure-four toeholds, and compression locks (AKA “slicers”, “crushers”) are legal in brown and black belt divisions only.