Sickle Sweep

What This Is

The sickle sweep is a seated-guard sweep in which the bottom player hooks one leg behind the standing opponent’s near or far ankle and pulls it in a scything arc — like a sickle cutting through grass — while simultaneously pushing or pulling the opponent’s upper body in the opposite direction. The two forces (ankle pulled in one direction, torso pushed in the other) create a rotational imbalance that tips the opponent over their own foot.

The sweep is executed from a seated or lying guard position against a standing opponent. The bottom player’s hooking leg acts as the sickle blade: it wraps behind the ankle at the Achilles tendon and sweeps inward and upward, taking the foot out of its supporting position. The far hand typically controls the opponent’s sleeve or wrist while the near hand or a posted hand creates the pushing force on the knee or hip.

The sickle motion distinguishes this sweep from static ankle-grab sweeps: the leg does not simply grab and pull — it moves in a curved arc, starting outside the ankle and sweeping inward. This arc is mechanically more effective than a straight pull because it matches the direction the ankle must travel to remove it from the supporting position under the opponent’s centre of mass.

The Invariable in Action

The standing opponent’s balance is maintained by the contact points between their feet and the mat. The sickle sweep attacks a single contact point — the near or far ankle — and removes it from the mat with a curved sweeping motion. Once that ankle is removed, the opponent’s centre of mass has no support beneath it on that side, and the push force at the upper body completes the toppling. The sickle works only when both parts act simultaneously: ankle removed, upper body pushed. Either without the other allows the opponent to compensate.

The opponent’s body is the lever: the ankle is the base, the hip or torso is the top end. The sickle leg controls the ankle end; the hand controls the torso end. When both are controlled and moving in opposing directions — ankle swept one way, torso pushed the other — the rotational force is unopposable. The opponent cannot resist both ends simultaneously without a third point of support, which the sickle leg has already removed.

Setup and Entry

From Seated Guard — Near Ankle

The primary entry. The bottom player is seated with the opponent standing in front. The near leg (the leg closest to the opponent’s near foot) extends toward the opponent’s near ankle. The foot hooks behind the Achilles tendon and the leg begins the sickle arc — sweeping the ankle inward and upward. The far hand grips the opponent’s sleeve or wrist to control their upper body; a push on the near knee completes the two-force sweep.

From Seated Guard — Far Ankle (Cross-Step)

The far ankle variant. The bottom player reaches with the near leg across the opponent’s stance to hook the far ankle from the inside. This requires a hip turn — the bottom player rolls slightly to the near side to extend the leg further. The cross-step hook is harder to establish but attacks the trailing leg, which is often less guarded. The push direction is the same — upper body pushed toward the hooked ankle.

As a Counter — Opponent Steps In

When a standing opponent steps forward to close distance or initiate a pass, the sickle sweep can be applied as the foot lands. The timing uses the opponent’s own momentum: their weight is already transferring onto the near foot, and the sickle hook is placed behind the ankle as the step completes. The forward momentum assists the sweep.

Execution

Step 1 — Establish seated position with hip alignment. Sit with the hips angled toward the sweep side. The near hip faces the opponent’s near foot — the hooking leg needs a clear path to the ankle without the hip being squared up.

Step 2 — Hook behind the Achilles. Extend the near leg and hook the back of the opponent’s near ankle — the foot wraps behind the Achilles tendon, not on the outside of the ankle. The hook placement must be on the posterior side so the sweeping arc can pull the foot forward and inward.

Step 3 — Sickle arc + upper body control. The hooking leg moves in a curved arc — inward and upward — while the far hand pulls the opponent’s sleeve or wrist and the near hand pushes the knee or hip in the sweep direction. All three movements happen simultaneously. The arc removes the ankle; the hand forces create the tipping direction.

Step 4 — Follow to top position. As the opponent tips, sit up into them and follow to top position — typically a knee-on-belly landing or side control depending on how the opponent falls.

Common Errors — and Why They Fail

Error: Pulling the ankle straight back rather than in an arc. Why it fails: A straight pull moves the ankle directly backward, which is the direction the opponent’s Achilles is strongest. The arc — curving the foot inward and upward — moves the ankle out from under the centre of mass, which is the direction with no natural muscular resistance. Correction: Think of cutting with a scythe — the motion curves inward. The straight pull is wrong; the arc is correct.

Error: No upper body control — sickle leg acts alone. Why it fails: The ankle hook without upper body force removes the base but does not create the tipping direction. The opponent simply steps the other foot out or hops. Correction: The sleeve grip or push must be in place before the sickle motion begins. Both forces act together.

Error: Hook placed on the outside of the ankle rather than behind it. Why it fails: An outside-ankle hook cannot generate the inward sickle arc — the foot slides off rather than wrapping. The hook must be behind the Achilles so the arc can sweep the foot inward. Correction: Hook behind the Achilles tendon specifically — the foot wraps around the back of the heel.

Drilling Notes

Systematic Approach

Phase 1 — sickle motion alone. With no partner, practise the seated leg extension and arc motion. Feel the difference between a straight pull and the curved sickle arc. The arc should finish with the foot higher than it started.

Phase 2 — hook placement. With cooperative partner standing, hook behind their Achilles from seated guard. Confirm the hook is posterior. Do not sweep — just establish the hook and feel its stability.

Phase 3 — full sweep at slow speed. Apply the sickle arc with simultaneous sleeve grip and push. Partner can prepare to post out or roll safely. Follow to top position.

Phase 4 — timing drill against a stepping partner. Partner takes a slow step; bottom player times the hook placement to coincide with the foot landing. This drills the counter-step timing without full resistance.

Ability Level Guidance

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