Kosoto Gari (Small Outer Reap) – Timing, Precision, and Tactical Control in Judo

Kosoto Gari, meaning “Small Outer Reap,” is a sharp and highly effective technique in Kodokan Judo. Classified as an Ashi-waza (leg technique), Kosoto Gari targets the outside of the opponent’s foot or ankle with a compact reaping motion.

While smaller in movement than Osoto Gari (Large Outer Reap), Kosoto Gari is extremely valuable in Randori (sparring) and competition Judo (shiai) due to its speed, subtlety, and strong combination potential.

What is Kosoto Gari?

In Kosoto Gari, tori (the attacker) breaks uke’s (the opponent’s) balance backward or slightly to the rear corner before reaping the outside of Uke’s foot or lower calf with a short, controlled motion.

Unlike Osoto Gari, which uses a large sweeping action against the thigh, Kosoto Gari is:

• Compact and precise

• Executed at ankle or lower calf level

• Often used as a follow-up or counter

• Dependent on timing rather than force

The throw removes uke’s base at ground level, making it quick and difficult to defend against when timed correctly.

Key Principles of Kosoto Gari

1. Subtle Kuzushi

Off-balancing is often small but precise — typically backward or diagonally backward.

2. Close Contact

Upper body control through Kumi-kata (grip control) is essential to prevent escape.

3. Short Reaping Motion

The attacking leg makes a tight reaping action rather than a large swing.

4. Timing Over Power

Kosoto Gari is most effective when uke’s weight shifts onto the targeted foot.

5. Continuous Pressure

Maintaining forward body pressure ensures a clean finish.

Why Kosoto Gari is Important

Kosoto Gari develops critical Judo skills, including:

• Foot placement accuracy

• Balance sensitivity

• Transitional attack awareness

• Combination building (Renraku-waza)

• Counter-attacking timing

Because it requires finesse rather than strength, it is suitable for judoka of all sizes and experience levels.

Kosoto Gari in Training and Competition

Kosoto Gari is particularly effective when:

• The opponent resists forward throws

• Uke steps backward to defend

• You transition from a failed forward technique

• You want to break rhythm during grip exchanges

In Olympic Judo and high-level competition, Kosoto Gari is often used as:

• A counter to forward attacks

• A set-up to Seoi Nage and Drop Seoi Nage

• A combination with Osoto Gari and Kosoto Gari 

• A movement-based entry during Randori

Common combinations include:

• Kosoto Gari to Seoi Nage

• Kosoto Gari to Kosoto Gari

• Kosoto Gari to Osoto Gari

Its speed makes it especially effective in dynamic exchanges.

Kosoto Gari vs Osoto Gari – Quick Distinction

Although both attack the outside line:

• Kosoto Gari: Small outer reap at the foot/ankle, compact and quick

• Osoto Gari: Large outer reap at the thigh, large and powerful

Kosoto Gari is subtle and tactical. Osoto Gari is dominant and decisive.

Common Mistakes in Kosoto Gari

• Attempting a large swinging motion

• Reaping without proper kuzushi

• Standing too far from uke

• Failing to control upper body grips

• Not committing to the backward finish

Refining these areas increases efficiency and scoring success.

Conclusion

Kosoto Gari may be classified as a “small” outer reap, but it plays a major role in effective Ashi-waza development. Its speed, precision, and combination potential make it a powerful tactical tool in both training and competition.

By mastering Kosoto Gari, judoka improve their kuzushi awareness, refine their grip control, and strengthen their ability to transition smoothly between attacks — essential qualities for success in Randori and competitive Judo.

Watch the video below for Left & Right demonstrations, a breakdown or the movement and competition examples:

WANT MORE THROWS?