01 / AT A GLANCE
Uchi-mata-sukashi: the defining action
Uchi-mata-sukashi is a hand-technique counter that slips the attacking action of uchi-mata and uses the attacker’s continuing rotation. The defender avoids the reaping leg and guides the upper body onward; reaping the support leg would be a different counter.
Name and scope: Uchi-mata-sukashi (内股すかし), commonly rendered as inner-thigh throw slip, belongs to Te-waza. Searches for “uchi mata sukashi” and the hyphenated spelling refer to the same official technique here. An informal nickname should be checked against the actual action before being treated as a separate technique.
Position convention: Uke attacks with a right uchi-mata. Tori keeps the upper-body connection, clears the path of uke’s right attacking leg and redirects the rotation through the hands. Practise the same attacking side until the timing is recognisable. Tori means the person performing the technique and uke the receiving partner. When reviewing a mirrored camera image, identify each person’s own sides first. Reverse the whole relationship for a left-sided lesson rather than changing one limb while preserving incompatible directions elsewhere.
The intended reader can already practise under supervision and wants to connect demonstration, diagnosis and decision-making. For uchi-mata-sukashi, the central question is: first make the attacking leg miss; then guide the rotation that remains. Beginners can study the shape with a coach; applying it against variable resistance requires the additional recognition and control work below. The article does not assign a universal belt level or promise that one body type will succeed automatically.
02 / WATCH THE TECHNIQUE
Official demonstration and a second viewing reference
Open this video on YouTube if the player is unavailable.
Open this video on YouTube if the player is unavailable.
Watch the gap between the attacking thigh and tori, then the immediate direction of the shoulders. Confirm that the finish comes through the hands rather than an unobserved supporting-leg reap.
Official reference: Kodokan. Second demonstration: Efficient Judo. Open the publisher links if either embedded player is unavailable.
A practical viewing question is: “Am I arriving while uke is still rotating, or trying to manufacture a new throw after the missed attack has already ended?” Compare that question across the official and second reference. Differences in speed, partner stance or grip route may explain different appearances. Do not combine isolated details from incompatible versions into one repetition. No timestamps or claims about unseen scoring sequences are supplied here.
03 / WHEN TO USE IT
Recognise an opening and recognise its absence
A usable starting relationship
The attacking leg passes without capturing tori’s body, while uke’s shoulders continue forward and the grips remain usable. Tori still has an independent base from which to guide the turn.
The useful grip distance is the distance at which the right attacking thigh misses but the shoulders remain within hand control. A large retreat may solve only the first half of that problem. Begin with an indicated right uchi-mata and compare a small body clearance with a step far backward. Tori should identify which version retains uke’s turning shoulder line without leaving the body in contact with the attacking thigh.
When the same shape is not an opening
Tori is already loaded onto the attacking thigh, has lost the grip connection or is being carried into the original throw. A late jump away does not automatically become a slip counter.
If uke’s thigh has already lifted tori, the presence of an open-looking space beside the leg does not mean the body can still slip into it. The decisive check is independent support. Rehearse an early passing attack and a controlled successful load separately. Tori clears the first and receives the second. Trying to make the same last-second jump in both cases confuses an available avoidance route with a body already being carried.
Movement to invite or read
Uke repeats the entry at low speed with predictable side and grip. Tori first practises small clearance only, then adds the hands when the rotation remains available. In an opposite-lead or unfamiliar grip arrangement, have the coach map the relevant limbs again. The fixed convention in this article provides a reference for comparison; it does not guarantee that the same approach distance survives every stance.
04 / HOW IT WORKS
Connect the grips, support and finishing action
Hands and upper-body connection
Maintain enough sleeve and upper-body connection to guide uke’s continuing turn. The hands amplify the available forward rotation after the miss; they should not pull against the attacking leg before the body has cleared it.
Feet, hips and available support
Move the threatened body and leg out of the attacking line while keeping a recoverable stance. The clearance can be small; a large retreat may escape the throw but lose the distance needed for the counter.
Complete the action under control
As the attacking leg misses, continue uke’s shoulder rotation into the available front corner with the hands. Stay connected through the fall without adding a support-leg reap and calling it the same technique.
Study the relationship beneath the visible shape
Avoidance and countering should be scored separately in learning. A large retreat may successfully avoid uchi-mata while leaving no connection for a throw. A small clearance may preserve connection but fail to remove the body from the attacking thigh. The useful solution satisfies both conditions: the leg misses and the shoulder rotation remains available. Practise them first at low speed, where an observer can see the gap and the retained grip relationship without guessing from the final fall.
The hands do not need to invent a new large movement after the miss. They guide the rotation that uke has already created. If tori pauses to admire the escape, uke may replace the support and recover posture. The counter then becomes a forced new pull against a stable stance. In slow rehearsal, keep the clearance and guidance continuous while making the clearance small enough that the torso stays within useful grip distance.
05 / KEY POINTS
Four cues with observable checks
Keep the defining mechanism visible
First make the attacking leg miss; then guide the rotation that remains. Ask the observer to describe that action before commenting on power. If a repetition succeeds through a different mechanism, record what actually happened. A fall or escape can be useful without proving that the intended uchi-mata-sukashi relationship improved.
Verify the position before adding commitment
An observer should be able to identify clear separation from the attacking thigh before the hand-led finish, with tori still balanced and close enough to control the shoulders. Use this as a brief checkpoint in cooperative practice, then remove the pause as coordination improves. The checkpoint is not a recommendation to freeze during a live exchange; it is a way to identify the relationship that must survive movement.
Preserve the correct stopping decision
Use a coach-arranged unavailable position to check your decision before adding resistance to uchi-mata-sukashi. The precise release or reception boundary is described in the defence section below. Otherwise, a partner who always supplies the ideal opening can teach commitment without teaching selection. A correct reset belongs in the practice record alongside a controlled completion.
Make the result lead to a next position
A hand-guided miss can send uke forward while tori remains beside the shoulder. Keep sleeve guidance through the fall and avoid stepping across the head as the rotation completes. The observer should describe the actual ending, not the intended ending. That description determines whether the next task belongs to finishing, stabilising on top or recovering underneath.
06 / PROBLEMS & ADJUSTMENTS
Diagnose the earliest cause before changing force
Tori avoids the leg but cannot throw because uke simply faces forward again.
The avoidance step may create too much distance for the upper-body connection. The hands may pause after the escape and restart only after uke has recovered the support. These are competing explanations to investigate, not a diagnosis made from the result alone. The next repetition should reveal which relationship fails first.
Test: Use a slow uchi-mata entry with no finish. Compare a small clearance and a large retreat while maintaining the same grips. Then observe whether the shoulder rotation remains available immediately after the leg passes. Adjustment: Reduce the avoidance distance and connect the hand direction to the existing turn without inserting a pause. Keep the other conditions as similar as practical for the comparison. An improvement in the relevant connection is more informative than one accidental completion after several unrelated changes.
Counter works only by hooking the supporting leg
If the attempted counter works only by hooking uke’s supporting leg, label and study that action separately as uchi-mata-gaeshi. A different successful counter does not prove the slipping mechanism has improved. For uchi-mata-sukashi, partner feedback should identify where the action was felt and when it changed. Combine that report with the observer’s view; an outside camera and an inside contact sensation provide different pieces of evidence.
Contrast clearing too far with staying close but caught
Use two contrasting failed attempts for diagnosis. In one, tori clears too far and the arms extend. In the other, tori stays close but is still caught by the attacking thigh. The first needs less distance; the second needs a better clearance route or earlier recognition. Calling both failures late timing can lead to contradictory corrections. Ask the observer to identify whether contact with the attacking leg remained, and whether the shoulder connection survived.
A third case occurs when the leg misses but uke deliberately stops the turn. This may be an appropriate moment to reset rather than a technical error requiring more force. The counter depends on a continuing body relationship, not merely on the fact that an uchi-mata was attempted. Learning to recognise the end of the opportunity prevents excessive pulling after the useful momentum has gone.
07 / SETUPS & COMBINATIONS
Make the next action depend on a response
First route: starting position, response and continuation
From ordinary grips, uke begins a controlled right uchi-mata. Tori clears the attacking line and, only if the shoulders continue forward, guides uchi-mata-sukashi. If uke stops and regains posture, tori returns to facing movement instead of forcing a delayed downward pull.
For the right-uchi-mata drill, uke chooses between continuing the turn after the leg passes and stopping the attack early. Tori clears in both cases but adds the hand-guided finish only while the shoulders are still rotating. The observer watches for a pause after avoidance. If the hands restart after uke has replaced the support, slow the exercise and reconnect guidance to the existing movement instead of adding a stronger late pull.
Second route: recovery or change of direction
After a successful avoidance that leaves both partners upright, tori may rebuild a forward attack from the next step. Treat that as a new sequence: the absence of continuing rotation means the immediate sukashi opportunity has ended.
After an avoided attack that ends with uke square and upright, the sukashi window has closed. Replace the clearing foot, face the partner and read the next step before launching a new attack. Do not continue twisting the wrist downward in search of the vanished rotation. The second action may be useful, but it must be described as a new attack from the recovery rather than evidence that every missed uchi-mata can be immediately countered.
08 / DEFENCES & COUNTERS
Separate prevention, recovery and a counter opportunity
The original attacker can reduce exposure by maintaining the upper-body connection and not swinging the leg through empty space. The defender’s first priority remains avoiding the attack with posture; the counter is available only if useful rotation survives.
Stop boundary: Receive the original throw when the attacking thigh has already taken the body and a grounded clearance is no longer possible. Do not twist a trapped knee or post a straight arm to preserve the counter attempt. The receiving partner must retain an agreed ukemi response when the original attack has succeeded. Do not replace reception with a desperate straight-arm post or a joint-twisting rescue.
The original attacker can reduce exposure by keeping the upper-body connection as the right thigh enters, rather than swinging into empty space. Let uke demonstrate a connected entry and an overreaching one at low speed. Tori should not assume the overreaching response is representative of every uchi-mata. The defender’s successful escape may end in a reset if uke restores posture; a named counter requires continuing rotation that the hands can still guide.
09 / GROUND TRANSITIONS
Read the position after the main action
If uke lands on the back close to tori, settle into a side hold after establishing a base. If uke lands on the knees or rolls away, face the shoulders and rebuild top control; a missed uchi-mata does not guarantee a scoring throw or a pin.
The miss can leave uke turning onto the knees rather than landing flat on the back. Tori should guide the shoulder without stepping across the head, then identify a stable top angle. If the sleeve stretches and the body moves away, do not dive after it. A back landing close to tori may permit side control, but a kneeling arrival requires a different positional task. Record the arrival without inferring a score from the counter’s name.
A completed throw and an established hold are separate outcomes. A controlled landing can still require leg clearance or shoulder repositioning before useful top control exists. Compare the actual uchi-mata-sukashi ending with the planned one, and practise the common arrival independently if it repeatedly becomes the weak part of the sequence.
10 / PRACTICE PROGRESSION
Progress from a clear shape to a real choice
Stage one: make the reference repeatable
Use the stated uchi-mata-sukashi convention with a cooperative partner. Begin slowly enough to identify the grip and support roles, and stop before completing an action that has lost its defining connection. Progress when both partners and the observer can describe the same relationship without guessing. Repetition count alone does not establish readiness.
Stage two: introduce the movement cue
Revisit the specific moving relationship described under “When to use it” for uchi-mata-sukashi. First keep its direction predictable, then vary its timing while preserving the same grips and side convention. Keep resistance modest while the cue changes. If the reference shape disappears on every moving attempt, reduce the step or escape amplitude and preserve the correct direction rather than forcing a finish.
Stage three: require a decision
Uke alternates an entry that passes through and one that stops before commitment. Tori distinguishes slip-and-guide from avoidance-and-reset, counting both appropriate decisions. A useful round includes a correct continuation and a correct decision not to continue. Record both. When these choices remain clear, increase unpredictability before increasing force, with the coach deciding what the pair can control.
Stage four: constrain the exchange, then broaden it
Build a choice drill with three responses: a continuing attack that misses, an attack that stops early and a controlled attack that successfully loads tori. The correct actions are respectively slip-and-guide, reset and reception. Begin with the response announced, then remove the announcement while keeping speed low. This introduces decision-making without asking beginners to improvise late escapes at full intensity.
For practice review, compare the moment immediately after the attacking leg passes. Is tori balanced? Are the shoulders still connected? Is uke still rotating? If all three are present but the finish fails, inspect the hand direction. If one is absent, return to the corresponding earlier task. This sequence gives the counter a clear diagnostic structure and prevents every unsuccessful attempt from being blamed on insufficient speed.
11 / COMPETITION EXAMPLE
A named official replay selection to study
Verified selection: Marcelo FRONCKOWIAK vs Nemanja MAJDOV — Abu Dhabi Grand Slam 2025. The IJF technique library page includes this contest in its Uchi-mata-sukashi technique-tagged replay data. The listing verifies the named pairing, event and technique tag. The listing credits the tagged action to Nemanja Majdov. It does not by itself establish the final score, a precise timestamp or a complete tactical account.
Use the selection to investigate one question: “Am I arriving while uke is still rotating, or trying to manufacture a new throw after the missed attack has already ended?” Before the tagged action, identify the grips and movement that made the situation possible. During the action, compare the defining connection with the official demonstration. Afterward, identify recovery and position. If the player or angle does not show one of those phases, leave that part of the observation blank rather than inferring it from the tag.
A useful competition note for uchi-mata-sukashi separates three things: what the official listing states, what you can actually see in playback and what you propose to test in practice. This article confirms the first and supplies prompts for the other two. It does not present an unviewed sequence as a frame-by-frame analysis, nor treat historical footage as certification under current event rules.
12 / VARIATIONS & COMPARISONS
Keep neighbouring techniques and variants distinct
Uchi-mata-gaeshi attacks the supporting leg. Uchi-mata-sukashi is classified as te-waza and uses the avoided attack plus hand-guided rotation. Ordinary defensive hopping may avoid an attack without producing either named counter.
In uchi-mata-gaeshi, a leg attacks the supporting leg. Here, the hands guide the attacker after the thigh misses. Compare both with the incoming uchi-mata to identify exactly what was avoided. Uki-otoshi offers a hand-led front-corner study, but its setup need not involve this particular attack. A useful comparison follows the support and contact, not only the final rotation.
13 / YOUR NEXT PRACTICE
One task, one observation and one next decision
Task: Perform ten recognition entries and record whether the attacking leg missed while the shoulder rotation remained connected.
Record: Separate successful avoidance from successful counter opportunity; a safe escape without a throw is a different useful outcome. Use the practice record template or the practice tools described in Judo AI. Include the starting stance, partner response and the single adjustment tested, so the observation remains interpretable at the next session.
Illustrative example — not measured user data: An illustrative log shows seven avoided attacks, but only three retained usable shoulder rotation. The next set shortens the avoidance step and checks whether connection improves without reducing safe clearance.
Coach question: “Am I arriving while uke is still rotating, or trying to manufacture a new throw after the missed attack has already ended?” Bring one clear success and one clear failure if recording is permitted. For uchi-mata-sukashi, choose the next drill from the earliest difference between them. Keep an adjustment that improves the intended connection across several comparable attempts; revise it when the predicted change does not appear. The purpose of the record is a better next decision, not a decorative count of repetitions.
14 / SOURCES & REVIEW
Sources, authorship and review
Kodokan official technique names establish the name and category. The IJF Uchi-mata-sukashi definition and video library and linked Kodokan demonstration are the primary technical references. The second video above is credited separately. The official replay listing in section 11 verifies the named contest and technique tag, not an unviewed score or every coaching proposal here.
By Judo AI · Editorial review: October 9, 2026. Definitions, source identity, article consistency and links have been checked. Practice tasks and diagnostic questions are editorial proposals to discuss with your coach, not a validated training protocol. Named technical-coach approval is still pending. Video identities were verified; complete playback and every contest detail have not been independently analysed.
Rules and scope: this is a supervised judo study guide, not a current refereeing manual. Historical footage does not establish current rule permissions. Ask your coach to check the applicable age group and event rules before using grip variations or submissions in shiai; this draft does not certify their legality. Stop a practice action when your partner taps, asks to stop or reports pain.
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