ONE Championship

Clinch fighting permitted — fundamental to Muay Thai; Knees + elbows in clinch are legal and heavily scored; Sweeps from clinch (without slamming) are legal

Punches (closed fist); Kicks (legs, body, head); Knee strikes (clinch + flying)

Standing 10-count for knockdowns; 3-knockdown rule per round: 3 knockdowns = TKO; KO + TKO via stoppage = total victory

3 rounds × 3 minutes (60-second rest between rounds); Championship fights: 5 rounds × 3 minutes

Foot sweeps + reaps to bring opponent down (with feet only, no judo throws); Holding+slamming explicitly prohibited

4-oz MMA-style fingerless gloves — open palm (distinct from traditional 8-10oz Thai boxing gloves); Mouthguard: mandatory; Groin protector: mandatory (men); chest protector for women

Ring: square boxing-style ring (typically 6m × 6m to 7m × 7m), 4 roped sides, padded canvas floor; Distinct from MMA cage — fighters bounce off ropes; Mandatory padded turnbuckle corners

Two competitors per match; Weight classes (Men, kg): Strawweight, Flyweight, Bantamweight, Featherweight, Lightweight, Welterweight, Middleweight, Light Heavyweight, Heavyweight (ONE-specific scaling); Women's divisions: Atomweight, Strawweight, Flyweight, Bantamweight, Featherweight

3 rounds × 3 minutes (60-second rest between rounds); Championship fights: 5 rounds × 3 minutes; Punches (closed fist)

10-Point Must scoring (boxing-style); Judges weight: damage dealt, ring generalship, clean strikes, aggression, defense; Distinct from Thai-traditional scoring (which weights ring-walking, technique purity, dominance late in the fight); ONE's Westernized scoring favors knockout-attempting aggression