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    Ippon-seoi-nage

    一本背負投 · いっぽんせおいなげ · one-armed shoulder throw · said EEP-pon seh-OY NAH-geh

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    Demonstrations

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    Illustration: source not recorded. Rights and removal
    Ippon-seoi-nage illustration

    The IJF publishes an animation of Ippon-seoi-nage: watch it on judo.ijf.org.

    About this technique

    The one-armed shoulder throw: instead of keeping the lapel grip, tori wraps uke's right arm over the shoulder and throws with that single trapped arm. Recognised by the Kodokan alongside the classical seoi-nage.

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    A technique to throw the opponent over the right shoulder by breaking his balance forward and holding his right arm from the inside with the right arm to carry him on the back.
    The Kodokan's definition

    Key points

    1. Trap their whole arm over your shoulder, their armpit on your shoulder
    2. Knees bent, hips below theirs, back glued to their chest
    3. Throw by straightening the legs and bowing, never by pulling the arm alone

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    Te-waza (hand techniques)

    At a glance

    , classification, Gokyo set, Kodokan number, contest rules, grades that require it
    What it is
    Nage-waza (throwing techniques), Te-waza (hand techniques).
    Kodokan number
    102 (ISN).
    Contest rules
    No rule singles it out.
    Required for

    Step by step

    These steps describe the standard right-handed form without relying on the video.

    1. From a right-handed grip, pull their right sleeve strongly forward and release your own lapel grip.
    2. Pivot in as for a shoulder throw, but swing your free right arm under their right armpit, wrapping their upper arm so it lies over your right shoulder, your elbow bent and pointing down.
    3. Finish the turn with both knees well bent, your hips below theirs, their chest tight against your back, both of your hands now controlling that one arm.
    4. Straighten your legs and bow sharply forward, steering the wrapped arm past your right side.
    5. They ride over your shoulder and land on their back in front of you; keep hold of the arm so the landing is supported.

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    Receiving it

    Your arm is drawn over their shoulder and clamped, and their back arrives under your chest; the throw is quick once the legs drive. You will rotate over their right shoulder holding nothing, so tuck your chin, let the trapped arm support you, and slap with your free left arm as your back lands.

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    VI judo notes

    Releasing the lapel costs you a source of information, so replace it at once: swing your arm under their armpit by sliding it up their sleeve arm, not by reaching into space. The checkpoint before you throw is their chest against your back across its whole width; if you can only feel them at your shoulder, your hips are not yet under theirs.

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    In competition

    , how often it scores at IJF level, and two contests where it worked

    Senior IJF competition, 2020 to 2026, from 73,099 contests. Counts scores, not attempts.

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    Grips that lead to it

    In combinations, counters and transitions

    , 9 recorded, 17 awaiting review

    17 more pairs involving it are recorded and awaiting review before they get a page. A video that shows one of them is what gets it reviewed: suggest one.

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    Grip plans that reach it

    Reference pages elsewhere

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