ONE Championship

Overview

Two fighters compete to win by knockout or earn the higher score based on damage and ring generalship. Bouts use 4-ounce open-fingered gloves and run for three 3-minute rounds under a 10-point-must scoring system.

How to win

• 10-point must scoring — Judges prioritize damage, ring generalship, clean strikes, aggression, and defense.
• 10-point must — Uses boxing-style 10-Point Must scoring.
• Judging criteria — Judges weigh damage, ring generalship, clean strikes, aggression, and defense.
• Distinct from Thai-traditional scoring (which weights ring-walking, technique purity, dominance late in the fight)…
• Championship titles — Each weight class awards a ONE Muay Thai World Champion belt.

The game

• Match and divisions — Each match has two competitors across men’s and women’s weight classes (+ variants).
• Two competitors — Each match has two competitors.
• Weight classes (Men, kg): Strawweight, Flyweight, Bantamweight, Featherweight, Lightweight, Welterweight,…
• Women's divisions — Atomweight, Strawweight, Flyweight, Bantamweight, and Featherweight.
• Officials — One referee, three judges, a ringside physician, and a commission inspector.

Playing the ball

• Standing 10-count for knockdowns; 3-knockdown rule per round: 3 knockdowns = TKO; KO + TKO via stoppage = total victory
• Permitted strikes — Use closed-fist punches, kicks, and clinch or flying knee strikes.
• 3 rounds × 3 minutes (60-second rest between rounds); Championship fights: 5 rounds × 3 minutes; Punches (closed fist)
• Fight duration — 3 rounds of 3 minutes with 60-second rests; championships use 5 rounds.
• Foot sweeps allowed — Use feet only; do not use judo throws or holding-and-slamming.

Fouls & penalties

• Illegal strikes: head-butts, back-of-head, throat, spine, eye-poke, groin → warning → point deduction → DQ…
• Illegal strikes — Head-butts and listed illegal targets escalate from warning to point deduction, then disqualification.
• Clinch slamming — Slamming an opponent from the clinch results in disqualification.
• Hitting on break — Warning, followed by a point deduction.
• Excessive holding-and-hitting — Receive a warning, then break.

Equipment

• 4-oz MMA-style fingerless gloves — open palm (distinct from traditional 8-10oz Thai boxing gloves)…
• Fingerless gloves — Use 4-oz MMA-style gloves with an open palm.
• Mouthguard — A mouthguard is mandatory.

⚠️ Strong Expectation— Most experienced players will take notice and be upset

• Perform the Wai Kru Ram Muay with genuine sincerity
  — The pre-fight ritual honoring teachers, the ring, and Buddha is sacred to Muay Thai's Thai Buddhist heritage. Rushing through it, performing it mockingly, or skipping it to appear 'tough' is deeply disrespectful. Even international fighters at ONE Championship are expected to engage with it genuinely, not as spectacle.(ONE Championship explicitly maintains the Wai Kru as part of its Muay Thai ruleset and production, reinforcing its cultural centrality.)[1][2][3]
• Never let the Mongkol touch the ground
  — The Mongkol is a sacred headband blessed by a monk and worn during the Wai Kru for spiritual protection. It must not touch the ground, be stepped over, or be casually tossed aside. The trainer places and removes it ceremonially; the fighter does not remove it themselves. Mishandling it is considered a serious breach of respect for the spiritual tradition.[1][2]
• Never taunt or stand over a knocked-down opponent⚡ ContestedProfessional play
  — Standing over a downed opponent to gloat, taunt, or perform celebratory gestures while they are still on the canvas is considered deeply unsportsmanlike. Muay Thai's tradition values humility in victory; acknowledging a finish with grace is the expectation, not bravado directed at an incapacitated opponent.[1][2]
• Never publicly disrespect your Kru (trainer) or corner
  — The Kru-student relationship carries deep spiritual weight in Thai Buddhist tradition. Publicly blaming your trainer after a loss, dismissing corner advice on camera, or undermining your gym's reputation is a serious cultural violation — not merely bad PR. The fighter is seen as an extension of the Kru's reputation, and vice versa.[1][2][3]

📋 General Expectation— Generally expected; soft social enforcement among regulars

• Wai (bow) to your opponent after the final bell, win or lose
  — Regardless of outcome, fighters are expected to acknowledge their opponent with a respectful wai or bow after the fight concludes. Refusing this acknowledgment — walking off without recognizing a hard-fought opponent — is considered disrespectful to both the opponent and the Thai cultural values the sport carries.[1][2]

🤝 Etiquette— Nice to follow; low consequence if ignored by newcomers

• Treat the Prajiad (armbands) with reverence
  — The Prajiad are cloth armbands typically blessed by a monk and worn during competition for protection. They should not be carelessly discarded, worn mockingly, or used as props. After competition they are typically kept by the fighter or returned to the trainer as spiritually significant objects, not disposed of casually.(More strictly observed in traditional Thai gym culture; some international fighters are unaware of this norm and trainers typically brief them on it before competition.)[1][2]