Uchi Mata

What This Is

Uchi Mata is the inner thigh throw — an inner thigh reap against the opponent’s near standing leg, combined with hip rotation and upper body pull, that sends the opponent over the attacker’s hip and onto the mat. It is one of the highest-percentage throws in judo at all competition levels and has become increasingly dominant in elite no-gi grappling, where wrestlers and BJJ competitors have adopted it as a primary takedown.

The throw family is defined by two elements: the hip insertion (the attacker pivots to place their hip in front of the opponent) and the inner thigh reap (the attacker’s near leg sweeps the inner thigh of the opponent’s load-bearing leg upward). These two elements act simultaneously — the hip insertion creates the fulcrum and the thigh reap applies the force that rotates the opponent over it.

Uchi Mata is related to Harai Goshi (sweeping hip throw), which uses the same hip insertion but attacks the outside of the thigh rather than the inner thigh. The two throws are often confused and chain well as alternates from the same clinch position — see the Harai Goshi note in the related pages section.

The Invariable in Action

The throw’s mechanical logic: the hip insertion places the attacker’s hip below the opponent’s centre of mass, creating a fulcrum. The upper body grip pulls the opponent forward and over that fulcrum. The inner thigh reap lifts the opponent’s base (their near leg) upward while the upper body rotation completes the throw. All three elements — hip insertion, upper body pull, inner thigh reap — must happen simultaneously. A hip insertion without the reap is a stall; a reap without the hip insertion is a trip with no rotation.

The upper body grip (whether underhook-and-collar-tie, Russian tie, or arm-drag-derived) must pull the opponent’s upper body forward throughout the hip insertion and reap. A practitioner who inserts the hip cleanly but relaxes the upper body pull will find the opponent posting their free foot and recovering their base. The pull and the hip/leg action are not sequential — they are simultaneous and must remain connected.

Throw Mechanics

Kuzushi — Breaking the Balance

Uchi Mata requires the opponent’s weight to be loaded onto the near leg — the leg being reaped. Without this weight loading, the inner thigh reap lifts a light leg that the opponent can simply move. Kuzushi (balance breaking) in Uchi Mata directs the opponent’s weight forward-and-across onto their near foot. The upper body pull achieves this — pulling the opponent forward and into the hip insertion creates the weight loading on the near leg that the reap then attacks.

The Pivot — Hip Insertion

The throw’s pivot places the attacker’s near hip in front of the opponent’s near hip. The attacker turns so their back faces the opponent — a 180-degree rotation — with the pivot foot (the foot on the reaping leg side) landing in front of and slightly outside the opponent’s near foot. The pivot is not a wide arc; it is a tight rotation that keeps the bodies close. Any gap between the two bodies during the pivot allows the opponent to step back and abort the throw.

The Reap

As the pivot completes, the reaping leg drives upward — the inner thigh of the attacker’s reaping leg contacts the inner thigh of the opponent’s near leg and drives it upward. The contact point is the inner thigh, not the knee and not the ankle. The leg motion is upward (toward the ceiling on that side), not backward. The reap is a leg lift through the opponent’s leg, not a backward kick.

The Upper Body — Follow-Through

The throw completes when the upper body continues to rotate — both hands pull the opponent forward and down while the reap drives the near leg up. The combination of forward-down (upper body) and up (near leg) creates the rotation that lands the opponent on their back. The attacker must follow through to the top position — not simply release and watch. The grip must be maintained through the landing to arrive in a dominant top position.

No-Gi Grip Entries

The absence of a gi collar changes the kuzushi approach but not the throw mechanics. In gi judo, the collar grip provides strong forward pull tension. In no-gi, the attacker must find equivalent grip configurations.

Underhook and Collar Tie — Primary No-Gi Combination

The most reliable no-gi Uchi Mata setup. The underhook (on the near-arm side relative to the pivot direction) controls the opponent’s hip and near side; the collar tie (far hand on the back of the opponent’s head) provides the forward pull. The underhook-collar-tie combination creates the same forward pulling tension as the gi collar, and the collar tie can be used to direct the opponent’s head over the reaping leg during the throw.

Russian Tie / 2-on-1 Entry

The Russian tie controls the opponent’s near arm, creating an isolation that can be converted to the Uchi Mata pivot. When the attacker drives the opponent’s arm across (the arm drag component of the 2-on-1), the opponent’s weight shifts onto the near foot — simultaneously creating the kuzushi and the pivot opportunity. The transition from the Russian tie to the throw must be fluid: arm drive into pivot without a pause. See: Russian Tie.

Overhook and Wrist Control

The attacker’s overhook on the opponent’s near arm (the Muay Thai-style arm clinch) combined with wrist control on the far arm can create the Uchi Mata entry. The overhook creates an inside position that limits the opponent’s defensive step; the wrist control provides forward pull tension during the pivot. Less common in pure grappling than the underhook-collar-tie but available in scramble situations.

Arm Drag — Creating the Rotation Needed for Hip Insertion

The arm drag (dragging the opponent’s near arm across the body) creates a momentary weight shift and a rotation of the opponent’s torso that opens the hip insertion angle. When the arm drag is used to create a back-take opportunity and the opponent turns to defend, their turned posture can be attacked with Uchi Mata rather than a back take — the turning opponent’s near hip is exposed for the pivot. See: Arm Drag.

Back Exposure — The Key Technical Problem

Back exposure is the primary technical risk of Uchi Mata in no-gi grappling. If the throw is not fully committed — if the hip insertion is incomplete, the kuzushi is insufficient, or the follow-through stalls — the opponent can step through the reap and end up behind the attacker. This converts a throw attempt into a conceded back take.

The back exposure problem is more acute in no-gi than in gi because the absence of gi grips means the kuzushi is less secure. An opponent who has not been properly loaded onto the near foot can absorb the reap and step around. The attacker’s back is fully exposed during the pivot — the 180-degree turn required by the throw temporarily puts the attacker’s back to the opponent.

The solution is not less commitment — it is more complete commitment. A half-committed Uchi Mata creates the back exposure without the throw. A fully committed Uchi Mata with complete hip engagement and follow-through to top position does not create the back exposure. The throw must be committed to its conclusion: pivot is tight, reap drives through (not just to the opponent’s leg), upper body follow-through pulls the opponent past the hip and all the way down. An Uchi Mata that stops at any of these stages creates the exposure without the throw.

When back exposure occurs despite full commitment: If the throw fails despite full commitment — the opponent counters, the kuzushi was insufficient, the timing was wrong — the attacker lands on the side they were rotating toward. If this is recognized early, the attacker can exit the throw by completing their forward rotation to face the opponent rather than continuing the pivot into a fully exposed back. This emergency exit requires recognising failure during the throw, not after.

Applications

Offensive from Neutral Clinch

The primary application. From the underhook-collar-tie clinch, feint or probe to create the near-leg weight loading, then pivot-and-reap. This is the application that requires the most developed kuzushi because the opponent is not moving predictably.

Counter to Single Leg — Opponent Drives Head In

When the opponent shoots a single leg and drives their head into the attacker’s hip, the attacker’s near hip is already loaded from the defensive perspective. The Uchi Mata can be applied by stepping over the penetrating leg, establishing the upper body pull on the opponent’s collar-tie position, and reaping the opponent’s far leg (the one still standing). This is a single-to-single-leg-counter-throw: the opponent’s single leg is countered by reaping the other leg.

Counter to Forward Pressure and Aggressive Level Changes

An opponent who presses forward aggressively is continuously loading their near foot — the same weight loading that the attacker’s kuzushi creates voluntarily. When the opponent pushes forward, a well-timed pivot converts their forward momentum into the throw’s rotation. This timing-based application requires less kuzushi work but more recognition of the opponent’s weight distribution moment.

Chains with Osoto Gari and Kouchi Gari

Uchi Mata sets up well with outside leg attacks that go to the opposite leg. If the attacker probes with an Osoto Gari (outer rear reap) and the opponent steps back to defend, the step back loads the near foot — Uchi Mata follows immediately. If Kouchi Gari (inside hook) is defended by the opponent stepping across, the crossed leg position opens the Uchi Mata reaping angle. See: Kouchi Gari.

Variations

Standard Inner Thigh Reap

The fundamental version — thigh-to-thigh contact, pivot into the opponent, reap upward. The version described throughout this page.

Ashi Uchi Mata — Foot Hook Variant

The reaping contact point shifts from the inner thigh to the foot — the attacker’s foot contacts the opponent’s inner thigh or inner calf rather than the thigh-to-thigh contact of the standard variant. The Ashi Uchi Mata is useful at longer range where the attacker’s hip cannot reach full insertion, and requires less hip commitment than the standard version. The trade-off: less rotation force at the contact point. The foot contact point creates a different lever dynamic — the foot pushes through rather than sweeping upward with the full leg.

Ken-Ken Uchi Mata — Hopping Variant

A hopping step-in on the pivot foot to generate momentum against a defensive or retreating opponent. The attacker hops forward on the pivot foot during the insertion rather than planting it — the hop adds forward momentum that carries through to the throw. This variant is more applicable against an opponent who is retreating (stepping back to create distance) because the hop follows the retreat. The back exposure risk is elevated in the Ken-Ken variant because the hopping motion is harder to abort if the throw fails — the attacker’s momentum committed them further.

Defence

Distance management: Uchi Mata requires the attacker to close distance and insert the hip. Creating and maintaining distance (using active footwork, frames, and grip control) is the first line of defence. An attacker who cannot close to inside hip distance cannot pivot for the throw.

Blocking the hip insertion: When the attacker begins to pivot, the defender can block the hip insertion by posting a knee against the attacker’s hip or blocking with the thigh. The hip block prevents the fulcrum from being established. Must happen before the pivot completes — once the hip is inserted, the block is too late.

Dropping the hips and widening the stance: A low stance with a wide base reduces the reap’s effectiveness — the inner thigh is harder to target when the stance is wide and the hips are low. This is a sustained defensive posture, not a reaction to the throw attempt.

Countering with a back take: When the attacker pivots and the throw does not complete — the kuzushi was insufficient or the defender blocked the hip — the defender has a back take opportunity from the attacker’s turned position. This is a high-skill counter that requires recognising the window early.

Common Errors

Drilling Notes

Ability Level Guidance

Also Known As

Related Pages