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    Combat Sports Glossary

    From KO to clinch — the language of combat sports, defined for fans, fighters, and promoters.

    Terms

    KO (Knockout)
    A fight-ending strike that renders the opponent unconscious or unable to continue.
    TKO (Technical Knockout)
    A stoppage called by the referee, doctor, or corner when a fighter is unable to intelligently defend themselves.
    Submission
    A grappling technique that forces an opponent to tap out, including chokes, joint locks, and pain-induced surrender.
    Decision
    A fight result determined by judges' scorecards when no stoppage occurs. Includes unanimous, split, and majority decisions.
    No Contest (NC)
    A fight result voided due to accidental rule violations, injuries, or other circumstances outside fighter control.
    Weight Cut
    The process of reducing body weight before a weigh-in to qualify for a specific weight class, typically through dehydration.
    Reach
    The distance between a fighter's outstretched fingertips, measured fingertip to fingertip.
    Stance
    A fighter's primary fighting position — orthodox (left foot forward), southpaw (right foot forward), or switch (alternates).
    Clinch
    A standing grappling position where fighters control each other's bodies and arms, common in Muay Thai and MMA.
    Guard
    In BJJ and MMA, a ground position where the bottom fighter uses their legs to control the top fighter.
    Mount
    A dominant ground position where one fighter sits on the opponent's torso.
    Sprawl
    A defensive movement to counter takedown attempts by extending the legs back and dropping the hips.
    Jab
    A quick, straight punch with the lead hand — boxing's most fundamental tool.
    Cross
    A straight punch with the rear hand, typically the most powerful basic strike in boxing and MMA.
    Hook
    A curved punch thrown horizontally to the side of an opponent's head or body.
    Uppercut
    A vertical punch thrown upward, typically targeting the chin or solar plexus.
    TeepMuay Thai
    A pushing front kick in Muay Thai used to maintain distance or set up combinations.
    Round Kick
    A circular kick striking with the shin, common in Muay Thai, kickboxing, and MMA.
    TakedownWrestling
    Any technique used to bring an opponent from standing to the ground.
    Double LegWrestling
    A wrestling takedown where both of the opponent's legs are attacked simultaneously.
    Single LegWrestling
    A wrestling takedown where one of the opponent's legs is attacked.
    ArmbarBJJ
    A submission hold that hyperextends the elbow joint.
    Triangle ChokeBJJ
    A submission using the legs to compress the opponent's neck and shoulder.
    Rear Naked Choke
    A blood choke applied from the back position by wrapping the arm around the opponent's neck.
    Pro Record
    A fighter's professional fight history, traditionally written as Wins-Losses-Draws (e.g., 12-3-1).
    Amateur Record
    A fighter's record from non-professional bouts, kept separate from the pro record.
    Title Fight
    A bout for an official championship belt or title.
    Main Event
    The featured fight at the top of a card, typically the last bout of the night.
    Undercard
    All fights on a card before the main event.
    Catchweight
    A bout fought at a weight other than the standard divisions, usually negotiated between the fighters.

    Weight classes

    Standard weight divisions used across most combat sports. Exact limits vary by organization (UFC, Bellator, ONE, K-1, etc.).

    Strawweight
    Up to 115 lb / 52.2 kg (varies by organization)
    Flyweight
    Up to 125 lb / 56.7 kg
    Bantamweight
    Up to 135 lb / 61.2 kg
    Featherweight
    Up to 145 lb / 65.8 kg
    Lightweight
    Up to 155 lb / 70.3 kg
    Welterweight
    Up to 170 lb / 77.1 kg
    Middleweight
    Up to 185 lb / 83.9 kg
    Light Heavyweight
    Up to 205 lb / 93.0 kg
    Heavyweight
    Up to 265 lb / 120.2 kg