Inside Heel Hook Game

Game Description

Cross ashi garami (the saddle) is the inside heel hook position. It is also the position with the shortest timeline from force application to structural knee injury in the leg lock system — shorter than the outside heel hook because the medial structures and ACL load through internal rotation faster than the lateral structures load through external rotation.

This game is the inside heel hook environment. It requires the same technical precision as DRILL-LL-05 and adds the full defensive problem: the defender is actively trying to extract, reverse the saddle, and prevent the finish.

This game may not be run without:

1. Both practitioners having completed DRILL-LL-02, DRILL-LL-05, and DRILL-LL-08.
2. Both practitioners verbally confirming the full tap protocol before the session.
3. A coach present for the session.
4. Agreement that the game will not be run in the same session as GAME-LL-02 (outside heel hook).

Pre-session verbal confirmation (both practitioners state aloud):

• “Two taps plus verbal ‘tap.’”
• “Rotation stops before grip releases.”
• “I signal at first knee awareness — not pain, not discomfort.”
• “I do not bridge while the heel is held.”
• “Ten-second pause after every reset.”

How to Run This Game

Setup: Cross ashi (saddle) confirmed: attacker’s thighs pinching the partner’s near thigh, hip connection active, partner’s inside heel exposed. Attacker establishes the inside heel cup grip before the clock starts. Coach confirms the position and the tap protocol.

Attacker’s game:

1. Saddle integrity: Knees pinching, hip connection active. Without both, the rotational differential that makes the inside heel hook work is absent.
2. Inside heel cup grip: Both hands cupping the inside heel. Grip is established at zero rotation.
3. Internal rotation applied: Torso rotates toward the partner’s head (internal rotation direction). Arms hold the heel; body generates the rotation.
4. Stop at tap — rotation stops first. Then grip releases. The saddle position may be maintained after the grip is released; the attacker does not need to concede the position to comply with the tap.

Defender’s game:

• Hide the inside heel: The most effective defence — rotate the knee outward to reduce internal heel exposure.
• Break hip connection: Secondary leg works to push the attacker’s hip out of the saddle. If hip connection breaks, the saddle’s rotational differential is reduced.
• Reverse the saddle: Advanced — the defender works to rotate toward their stomach and step over the attacker’s leg, reversing out of the saddle to a position above the attacker. This is a high-level defensive manoeuvre that requires its own training.
• No bridging while the inside heel hook is applied. Internal bridging loads the ACL through the same internal rotation the attacker is applying. Tap.

Tap protocol: Two taps plus verbal “tap.” Rotation stops at tap. Grip releases after rotation stops. Ten-second pause. Coach times the pause.

Score: Five rounds per session. Do not run more than five rounds in a single session.

Coaching Notes

The inside heel hook game requires more active coaching supervision than any other game in this system. The coach’s role is to enforce the pause, watch for bridging from the defender, and observe whether the attacker’s rotation is gradual (correct) or sharp (dangerous).

Mechanical coaching: The attacker who has the saddle position but allows the hip connection to go passive will find the inside heel hook difficult to finish — the defender’s secondary leg can create enough hip displacement to reduce the rotational differential significantly. Hip connection is the mechanical prerequisite for the finish. Enforce the sequence: saddle integrity and hip connection confirmed before the heel cup grip is established.

Safety coaching: The inside heel hook produces training injuries when one of three conditions exists: the attacker applies rotation quickly rather than gradually; the defender bridges rather than tapping; or the tap-release reflex has not been trained to the point of automaticity. All three are addressed directly by the prerequisites. Coaches who observe any of these conditions should stop the game, address the specific issue, and not resume until the correction is confirmed.

The ten-second pause is the coach’s most important enforcement tool. Practitioners who skip the pause are building the habit of urgency at the reset point — the opposite of the habit needed for safe inside heel hook training.

Progressions

1. Allow the defender to reverse the saddle actively — train the full offensive and defensive saddle exchange.
2. Add the transition: if the inside heel hook is blocked, the attacker may transition to outside ashi and attempt the outside heel hook. This creates the full inside/outside heel hook decision game.
3. Run with a role-rotating structure after each score. This ensures both practitioners develop both roles of the saddle game.