Imanari Roll

What This Is

The Imanari roll is a standing-to-ground leg entanglement entry in which the attacker dives forward and rolls inverted, threading their legs through the opponent’s leg configuration during the roll. The entry takes its name from Masakazu Imanari’s extensive use of this technique in competition, which popularised it in no-gi grappling.

The landing position is determined by leg placement during the roll: landing with the opponent’s leg between the attacker’s legs in the ashi configuration produces standard ashi garami; a deeper inside hook during the roll can land in cross ashi; a modified angle can land in 50/50. The roll is not a passive falling movement — the attacker actively threads the legs during the dive, and the quality of the landing is directly determined by the precision of that threading.

The Imanari roll is one of the highest-risk standing entries in no-gi grappling. A failed or stuffed roll lands the attacker on their back exposed to top position — the opponent can simply stop the roll and establish top control. This is an Advanced technique with significant counter-risk that should not be attempted until the leg entanglement ground game is fully developed.

Safety First

Additional safety note: the roll itself carries injury risk to the attacker if it is stuffed — particularly to the neck and shoulder if the weight comes down wrong. Drill the roll mechanics slowly and correctly before attempting with resistance.

The Invariable in Action

The Imanari roll works because the forward dive is unexpected and difficult to sprawl in the conventional sense. The defender’s instinct is to sprawl backward — but the attacker is going to the legs, not shooting for the hips. The destabilisation is the surprise of the movement pattern, which creates a brief window during which the legs can be threaded before the defender reorganises their defensive response.

The roll must be initiated from a distance close enough that the threading is possible during the diving arc. Too far away and the roll lands short — the legs do not reach the opponent’s legs during the roll, and the landing is on the mat with no entanglement established. The entry distance is tighter than it appears when watching high-level demonstrations.

The specific leg configuration during the roll determines which entanglement the attacker lands in — and therefore which submission family is immediately available. The hip angle and leg threading during the inverted phase of the roll sets the landing. This is the most technically demanding aspect of the Imanari roll: executing precise leg placement while inverted and in motion.

Defence

Step back and posture: the most reliable defence to the Imanari roll is stepping back while the attacker commits to the dive. A large step back removes the legs from the threading zone — the attacker lands with no leg contact and is exposed on their back.

Sprawl angle: unlike a conventional shot, the Imanari roll goes to the ground in front of the attacker — not into the hips. Sprawling backward moves the hips away from the roll path. Sprawling forward (dropping the hips toward the mat in front of the attacker) is less effective.

Top control after a stopped roll: if the roll is partially stopped — the attacker has gone to the mat but the legs are not threaded — establish top position immediately. The attacker is temporarily on their back without a guard configuration. Pass quickly before they establish a guard.

Setup and Entry

The Rolling Mechanics

The attacker dives forward and to the side, rolling inverted. The lead shoulder goes toward the mat; the head stays to the side (not planted in the mat). During the roll, the outside leg hooks behind the opponent’s near ankle or shin; the inside leg threads between the opponent’s legs. The roll should arrive in the ashi garami configuration — outside leg hooked, inside leg between the opponent’s legs, hip in the space between both players.

The roll is initiated from the standing clinch, from seated position with the opponent standing, or from any configuration where the attacker is close enough to reach the opponent’s legs. Jiu-jitsu players most commonly initiate it from a neutral standing engagement or from seated guard against a standing opponent.

Setup — Disguise

The Imanari roll is most effective when disguised within a movement sequence — initiating it from a feinted collar tie, from a level change that looks like a takedown shot, or from a footwork pattern that closes the distance without telegraphing the dive. An Imanari roll telegraphed from the start gives the opponent time to step back.

Landing Positions

The landing configuration is determined during the roll itself.

Common Errors

• Initiating from too far away: the legs cannot reach during the roll arc — the attacker lands on the mat with no entanglement. The entry distance is closer than it looks.
• Planting the head: driving the head into the mat during the roll instead of keeping it to the side. This produces a neck-loading impact and a compromised roll trajectory.
• No active threading: rolling without consciously directing the legs to thread during the inverted phase. The roll must be combined with deliberate leg placement — it is not a passive roll that lands in entanglement by coincidence.
• Attempting before the ground game is developed: the Imanari roll requires the attacker to be competent in all three potential landing positions before it is useful. Landing in cross ashi without the ability to finish inside heel hooks, manage heel hook defence, and transition correctly is not only ineffective — it creates danger for both practitioners.

Drilling Notes

Roll mechanics first: drill the roll itself — dive, shoulder to mat, head to the side, legs thread — without any partner. The mechanics must be automatic before adding a live person to the equation.

Slow-motion with a cooperative partner: the partner stands still; the attacker drills the full entry at 20% speed. Focus on the leg placement during the inverted phase. Develop tactile awareness of where the legs are during the roll before adding speed.

Landing position drilling: separately drill finishing from ashi garami, cross ashi, and 50/50. The roll is only useful if you can work from where it lands. Develop all three ground positions before drilling the roll entry.

Defence drilling: practise the step-back defence frequently. Understanding the correct defence improves the attacker’s timing awareness — the roll must be initiated before the opponent can step back.

Ability Level Guidance

Foundations — Proficient

The Imanari roll is not appropriate at these levels. Develop the full ground leg entanglement system before studying this entry. The landing position must be a position of strength before the entry is used.

Advanced

Study the roll mechanics, the landing position management, and the counter-risk. Drill slowly and deliberately. Add to the competition arsenal only when the landing positions can be worked with confidence under resistance.

Elite

The Imanari roll as a setup tool — using the threat of the roll to manipulate the opponent’s footwork and defensive stance, creating opportunities for conventional takedowns and entries. At this level the roll exists in a threat-counter-threat framework, not as an isolated technique.

Ruleset Context

Also Known As

Related Pages