ONE Championship

Weight classes

DIVISIONS Upper Limit (Kilograms)  
Heavyweight 102.2kg – 120.2kg  
Light Heavyweight 93.1kg - 102.1kg  
Middleweight 84.0kg - 93.0kg  
Welterweight 77.2kg - 83.9kg  
Lightweight 70.4kg - 77.1kg  
Featherweight 65.9kg - 70.3kg  
Bantamweight 61.3kg - 65.8kg  
Flyweight 56.8kg - 61.2kg  
Strawweight 52.3kg - 56.7kg  
Atomweight 47.7kg – 52.2kg  

 

 

GENERAL REGULATIONS & POLICIES 

RELATED TO ATHLETES’ WEIGHT

1. Athletes must submit their current walking weight and daily training weight regularly. Athletes will input and track their daily weight online via a dedicated web portal. Athletes may input data weekly but must include daily weights.

2. Athletes will be assigned to their weight class based on collated data and random weight checks. Athletes are not allowed to drop a weight class when less than 8 weeks out from an event.

3. During fight week, weights are checked daily. Urine specific gravity will also be checked the day after arrival and 3 hours prior to the event.  Athletes must be within their weight class and pass specific gravity hydration tests all week and up to 3 hours before the event.  If an athlete falls outside the weight, or fails a test, they are disqualified from the event.  Doctors may request additional testing at their discretion.

4. Catch weight bouts are allowed. However, the athlete with the higher weight will not be heavier than 105% of the lighter opponent’s weight.

5. ONE will conduct random weight checks on athletes at our discretion.

6. Athletes may petition to change weight classes outside of the 8-week competition zone and must be within their new desired weight at that time. In addition, athletes must pass a specific gravity urine test when their weight is within the limits of the newly petitioned weight class. ONE doctors can request additional testing to determine the amount of weight drop allowed over a specific time.

7. The usage of IVs for the purpose of rehydration will not be allowed.

Overage and limits of weight reduction:

·        3 weeks to event day: Athlete must be within contracted weight class

·        4 weeks: 1.5% bodyweight over max

·        5 weeks: 3%

·        6 weeks: 4.5%

·        7 weeks: 6%

·        8 weeks: 6% max over.

(ONE Chief Doctor may approve up to +/- 0.5% maximum error in any weekly weight check)

 

 

 

Atomweight class limits 47.7kg – 52.2kg

Maximum weight at specified interval to remain in Atomweight class:

8 weeks and beyond = 55.4kg 

7 weeks = 55.4kg

6 weeks = 54.6kg

5 weeks = 53.8kg

4 weeks = 53.0kg

3 weeks = 52.2kg

3 weeks to 3 hours prior to event = 47.7kg – 52.2kg

 

 

Strawweight class limits 52.3kg - 56.7kg

Maximum weight at specified interval to remain in Strawweight class:

8 weeks and beyond = 60.2kg 

7 weeks = 60.2kg

6 weeks = 59.3kg

5 weeks = 58.4kg

4 weeks = 57.6kg

3 weeks = 56.7kg

3 weeks to 3 hours prior to event = 52.3kg - 56.7kg

 

 

Flyweight class limits 56.8kg - 61.2kg

Maximum weight at specified interval to remain in Flyweight class:

8 weeks and beyond = 65.0kg 

7 weeks = 65.0kg

6 weeks = 64.0kg

5 weeks = 63.0kg

4 weeks = 62.1kg

3 weeks = 61.2kg

3 weeks to 3 hours prior to event = 56.8kg - 61.2kg

 

 

Bantamweight class limits 61.3 - 65.8kg

Maximum weight at specified interval to remain in Bantamweight class:

8 weeks and beyond = 69.8kg 

7 weeks = 69.8kg

6 weeks = 68.8kg

5 weeks = 67.8kg

4 weeks = 66.8kg

3 weeks = 65.8kg

3 weeks to 3 hours prior to event = 61.3 - 65.8kg

 

 

Featherweight class limits 65.9 - 70.3kg

Maximum weight at specified interval to remain in Featherweight class:

8 weeks and beyond = 74.6kg 

7 weeks = 74.6kg

6 weeks = 73.5kg

5 weeks = 72.4kg

4 weeks = 71.4kg

3 weeks = 70.3kg

3 weeks to 3 hours prior to event = 65.9 - 70.3kg

 

 

Lightweight class limits 70.4kg - 77.1kg

Maximum weight at specified interval to remain in Lightweight class:

8 weeks and beyond = 81.8kg

7 weeks = 81.8kg

6 weeks = 80.6kg

5 weeks = 79.4kg

4 weeks = 78.3kg

3 weeks = 77.1kg

3 weeks to 3 hours prior to event = 70.4kg - 77.1kg

 

 

Weltweight class limits 77.2kg - 83.9kg

Maximum weight at specified interval to remain in Welterweight class:

8 weeks and beyond = 89.0kg

7 weeks = 89.0kg

6 weeks = 87.7kg

5 weeks = 86.4kg

4 weeks = 85.2kg

3 weeks = 83.9kg

3 weeks to 3 hours prior to event = 77.2kg - 83.9kg

 

Middleweight class limits 84.0kg - 93.0kg

Maximum weight at specified interval to remain in Middleweight class:

8 weeks and beyond = 98.7kg

7 weeks = 98.7kg

6 weeks = 97.2kg

5 weeks = 95.8kg

4 weeks = 94.4kg

3 weeks = 93.0kg

3 weeks to 3 hours prior to event = 84.0kg - 93.0kg

 

Light Heavyweight class limits 93.1kg - 102.1kg 

Maximum weight at specified interval to remain in Light Heavyweight class:

8 weeks and beyond = 108.4kg


7 weeks = 108.4kg


6 weeks = 106.8kg 

5 weeks = 105.2kg


4 weeks = 103.6kg


3 weeks = 102.1kg


3 weeks to 3 hours prior to event = 93.1kg - 102.1kg 

 

Heavyweight class limits 102.2kg - 120.2kg

Maximum weight at specified interval to remain in Heavyweight class:

8 weeks and beyond = 127.6kg

7 weeks = 127.6kg

6 weeks = 125.7kg

5 weeks = 123.8kg

4 weeks = 122.0kg

3 weeks = 120.2kg

3 weeks to 3 hours prior to event = 102.2kg - 120.2kg