Osoto Gari

What This Is

Osoto gari — the major outer reap — is the foundational outer reaping throw of judo and the most common judo entry in no-gi collar-tie exchanges. The attacker drives the opponent’s upper body backward and across, loads the opponent’s posting (near) leg with that drive, and reaps the loaded leg with a large outer arc through the back of the thigh. The combination of upper-body drive and lower-body reap rotates the opponent backward over the swept leg.

Osoto’s geometry is direct: drive the head and shoulders back, reap the loaded leg out from under the load, follow through to the mat. Where uchi mata requires a 180-degree pivot and back-exposure tolerance, osoto attacks straight through the opponent’s posture with no turning of the back. This makes osoto the easier no-gi judo entry to teach and the higher-percentage finish at developing levels — the throw fails into a forward stumble rather than a back-take exposure.

The Invariant in Action

Throw Mechanics

The Drive — Kuzushi Through the Upper Body

The throw begins with a sharp drive of the opponent’s head and shoulder line backward and across — the collar tie pulls the head down toward the reap-side hip; the underhook (if present) lifts and drives forward on the same diagonal. The drive direction is not straight back — it is a diagonal from the opponent’s head toward the foot the attacker is about to reap. The opponent’s reactive step lands the weight on the heel of the posting leg.

The Reap — Large Outer Arc

The reaping leg — the attacker’s same-side leg as the opponent’s posting leg — swings up and across the back of the opponent’s thigh. The contact point is the back of the thigh, just above the knee, with the reaper’s hamstring and back of knee against the opponent’s hamstring. The reap arcs through — the leg continues past the contact rather than stopping at it. The motion is a large pendulum, not a kick.

Head and Shoulder Drive — Simultaneous With the Reap

The upper-body drive does not stop when the reap begins — it continues. The collar tie pulls the head down to the reap-side hip; the chest drives forward over the opponent. The combination of upper-body forward-and-down with lower-body reap creates the rotation. A reap without continued upper-body drive lifts the opponent’s leg without rotating their body — the opponent hops on the standing leg and recovers.

Chest-to-Chest Finish

The throw finishes with the attacker’s chest descending onto the opponent’s chest as the opponent lands on their back. The grip is maintained through the landing. The attacker arrives in a top control adjacent to side control — see the post-throw section below.

No-Gi Grip Entries

The absence of a gi collar removes judo’s primary grip but does not remove the throw — the no-gi grip set replaces the collar grip with a collar tie or underhook, and the mechanics carry across.

Single Collar Tie — Primary No-Gi Entry

The most common no-gi setup. The far hand grips the back of the opponent’s neck — the collar tie. The drive direction pulls the head down and across toward the reap-side hip. This is the same action as the gi collar grip in mechanical terms: pulling the upper body off-line to load the posting leg. See: Single Collar Tie.

Double Collar Tie

Both hands behind the neck. The drive is straight forward and down through the head. The opponent’s defensive step backward loads the posting leg; the reap fires on that load. The double collar tie removes the opponent’s ability to rotate away from the throw and is particularly effective when the opponent is taller. See: Double Collar Tie.

Over-Under Clinch

The underhook on the reap side; the overhook on the far side. The underhook lifts and drives forward; the overhook prevents rotation. This is the strongest no-gi configuration for sustained drive force. See: Over-Under Clinch.

Post-Throw Position

Osoto lands the attacker in a top control adjacent to front headlock and side control. The chest-to-chest finish, with the collar tie or underhook still engaged, places the attacker on top with the opponent’s near arm typically trapped between their body and the attacker’s chest. From this landing position, the attacker can:

• Convert to front headlock: If the opponent’s head is exposed and the chest pressure is established, the collar tie converts directly to a front headlock control. See: Front Headlock.
• Pass to side control: If the opponent’s near arm is trapped, the attacker can secure side control directly off the throw without needing a separate pass.
• Settle to high mount or knee-on-belly: When the opponent’s arms are trapped underneath, the attacker can step over to mount as the opponent struggles to recover frame.

The connection between osoto and front headlock is meaningful: the same collar tie that delivered the throw is the entry to the dominant ground control that follows. The throw is not an isolated move — it is the front-headlock entry that drops the opponent into the position rather than wrestling them into it.

Common Errors

Drilling Notes

• Drive footwork without partner. Practise the diagonal drive and reap arc against air, with the planted foot as the reaping pendulum’s anchor. The reap is a large arc — drill the full motion before adding a partner. Twenty reps per side.
• Static drive-and-reap with partner. Cooperative partner stands in collar-tie posture; attacker drives the head, waits for the reactive step, and reaps. Slow tempo. The drill builds the trigger — reap fires on the step, not on the grip.
• Walk-and-reap. Partner walks backward; attacker stays in collar-tie connection and times the reap to the step where the heel lands hard. Builds the timing window against a moving target.
• Tani-otoshi backup drill. When osoto is defended (opponent steps over the reap), the attacker drops to tani otoshi as the failure-mode follow-up. Drill the failure-recovery transition cooperatively before adding resistance.

Ability Level Guidance

Also Known As

Related Pages