Ken Ken Throws
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Right-Right Ai-Yotsu·Seiryoku Zenyo
Mark Gilston, 4th degree judo black belt, demonstrates the use of "Ken Ken" or hopping foot sweep techniques in judo and…
Right-Right Ai-Yotsu
Genus右相四つ(Migi Ai-yotsu)
TraditionalTranslation: right-right same-side grip
Overview
The Right-Right Ai-Yotsu positions both fighters in right-handed stance, with each gripping left hand on the collar and right hand on the sleeve in a symmetrical right-side-forward configuration. [1] This is the most common matchup in judo, as the majority of competitors fight right-handed. [1],[2] Right-right ai-yotsu provides the classical platform for judo's fundamental forward throws — seoi-nage, uchi-mata, harai-goshi, osoto-gari — all of which were originally developed and refined for this symmetrical right-handed configuration. [2],[3]
History & Origin
Right-right ai-yotsu is the default judo matchup and the configuration for which the majority of judo techniques were originally designed and taught. [1] Jigoro Kano's original curriculum was built around right-handed technique execution, establishing right-right ai-yotsu as the foundational judo fighting stance. [2],[3]
Effectiveness
Right-right ai-yotsu is the most common grip configuration in judo, as most fighters favour the right-handed stance. [1]
Lineage
The default grip orientation in judo competition and training. [1]
Competition Record
Images
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Biomechanical Mechanism
Primary Action — Establishing gi-based grip fighting (kumi-kata) to control the opponent's balance and movement
Joints Involved — Attacker's wrists and forearms (gripping), opponent's collar and sleeve (controlled), hips (positioning)
Force Vector — Push-pull dynamics — one hand controls the collar for direction, the other controls the sleeve to restrict posting
Grip Principle — Dominant grips dictate the available throws — breaking the opponent's grip while maintaining your own is the foundational battle
Position & Entry
From striking range — Close the distance and establish a controlling grip or tie on the opponent
From hand fighting — Win the grip exchange by swimming inside or securing the dominant tie position
From defensive reaction — When the opponent advances, establish the clinch to control their movement and energy
Variants
Standard variation — primary clinch configuration from the most common entry
Gi variation — adapted with collar and sleeve grips for gi-based grappling
No-gi / MMA variation — modified for no-gi or cage fighting conditions
Offensive variation — configured to set up strikes, takedowns, or submissions from the clinch
Videos
Advanced Judo Grip Fighting: A powerful way to avoid the post arm during grip fighting
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Right-Right Ai-Yotsu·Rochester Judo
In right v. right grip fighting battles, one player will often post their left (non power) hand on thier opponents right…
Basic Judo throws and concepts
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Right-Right Ai-Yotsu·Shintaro Higashi
Judo Basics. Here we cover the basic Judo positions and some basic throws and combinations. Osoto 1:24 Taio 1:30 Kenkay…
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3 videosWhat Instructors Say
Right-Right Ai-Yotsu (same-side grip, right versus right) is the foundational collar-sleeve grip configuration in judo where both practitioners lead with their right side. According to Shintaro Higashi, the grip mechanics emphasize a high lapel placement near the jaw rather than down by the chin, combined with a sleeve grip on the bicep or wrist to control the opponent's power arm and restrict elbow mobility. Higashi notes that the right leg forward with dominant right-hand posture control defines this configuration, and practitioners naturally develop preference for one direction of rotation—typically turning left with a right-leg lead—due to lifelong asymmetrical training. Rochester Judo's analysis focuses on grip-fighting dynamics within this position, highlighting the danger of the opponent's post arm (left-side blocking hand) preventing rotational attacks; they recommend shifting the engagement angle to the outside to bypass this defensive response and create space for power-hand placement before executing forward techniques like Tai Otoshi or Seoi Nage. Seiryoku Zenyo's Ken Ken throws material, while broader in scope, demonstrates how hop-and-turn adjustments amplify effectiveness in right-right configurations when initial contact fails—particularly for Osoto Gari, Ouchi Gari, and Ko Soto Gari. All three instructors agree that control of posture and timing are critical, and that understanding the opponent's natural resistance patterns informs technique selection.
Synthesized from 3 instructors
- Shintaro Higashi — Basic Judo throws and concepts: Detailed grip placement mechanics: high lapel control, bicep versus sleeve sleeve variations, elbow pin principles, and the role of dominant-side preference in technique execution. Identified backward techniques (Ouchi, Osoto) and forward turning techniques available from right-right positioning.
- Rochester Judo — Advanced Judo Grip Fighting: A powerful way to avoid the post arm during grip fighting: Analysis of grip-fighting complications in right-right scenarios, specifically the defensive post-arm block and its prevention. Demonstrated angle-shift methodology to establish power-hand control and enable rotational attacks while avoiding counter-throw vulnerability.
- Seiryoku Zenyo — Ken Ken Throws: Demonstrated hop-and-turn adjustments (ken-ken variations) for Osoto Gari, Ouchi Gari, Ko Soto Gari, and Uchi Mata when standard entries encounter resistance, illustrating how rhythm and timing supplements grip control in right-right configurations.
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Ratings
Risk of injury to the person this technique is applied to
2
Low2/10
Grip fighting is primarily positional; finger/wrist strain risk
Skill level needed to execute this technique reliably
Advanced
Whether this technique is allowed under major competition rule sets
Restricted
WBC/Boxing — Holding is technically a foul — referee breaks clinch, excessive holding results in point deduction {src— WBC Rules of Boxing}
K-1/GLORY — One attack from clinch allowed, then referee breaks {src— K-1/GLORY Kickboxing Rules}
— WAKO — Clinch generally broken by referee — limited or no...
WAKO Competition RulesPDFLegal
— Unified MMA — Legal — clinching is integral to MMA
Unified Rules of MMA, August 2025PDF— grip fighting
IJF Sport and Organisation Rules 2025, Article 27PDF— IBJJF — Legal — standing grip fighting and clinch work pe...
IBJJF Rules Book v6.0, June 2024PDF— IFMA — Legal — the clinch is a core element of Muay Thai,...
IFMA Muay Thai RulesPDF— UWW — Legal — clinch is fundamental to wrestling, the pri...
UWW International Wrestling Rules, January 2026PDFTraining Notes
✓Right-right ai yotsu is the most common grip matchup in judo — both fighters grip with the right hand on the collar and left hand on the sleeve
✓From this standard right-handed mirror position, all forward throws are available to both fighters — it's the most studied matchup
✓The right hand controls posture through the collar; the left hand controls the arm through the sleeve
✓In right-right ai yotsu, the fighter with the deeper right-hand collar grip has the throwing advantage
✓Uchi mata, seoi nage, o goshi, and harai goshi are the classic throws from this position
✓Chain attacks: right-handed uchi mata feint to ouchi gari, or seoi nage attempt to kouchi gari
✓Study video of elite judoka in right-right matchups — this is where the highest level of kumi kata is displayed
Common Mistakes
!Accepting a shallow right-hand grip when the opponent has a deep one — fight to equalise or break their grip
!Using only right-side throws — add left-side counters (e.g., left ouchi gari) to surprise the opponent
!Standing in a static mirror with matched grips — use push-pull, circles, and feints to break the symmetry
!Not training grip-break sequences for the right-right position — each side has specific vulnerabilities
!Throwing without kuzushi — same-side grip makes it easy to feel balanced; create off-balance first
!Ignoring the opponent's favourite throws — in ai yotsu, their throws mirror yours; defend what you'd attack
!Gripping defensively (stiff arms, straight posture) — this invites penalties in judo and stalls the fight
Related Techniques
Counter Techniques
Pummeling — fight for inside position by swimming arms under opponent's gripsFrame and Push — create distance using forearm frames against the chest or neckGrip Break — systematically strip the opponent's controlling gripsPosture Up — straighten the spine and drive the hips forward to break clinch control
Setup Chain
1Close Distance — bridge the gap using footwork, strikes, or a level change
2Establish Primary Grip — secure the initial controlling grip on the opponent
3Position the Hips — align hips to maximize leverage and control angle
4Apply Pressure — use the grip to control posture and create offensive opportunities
Sources & References
Primary Source
Kodokan Judo (Jigoro Kano, 1986)
1BookKodokan Judo (Kano, 1986)
Alias sources — [1] Kodokan Judo (Kano, 1986) [2] Best Judo (Inokuma & Sato, 1979) [3] Kodokan New Japanese-English Dictionary of Judo (IJF, 2000)
2BookMuay Thai: The Art of Fighting (Kraitus, 2002)
Effectiveness sources — [1] Kodokan Judo (Kano, 1986)
Official Kodokan ground technique classification system
4OtherJapanese Martial Arts Standard Terminology (武道用語)
Established Japanese martial arts naming convention — native Japanese term (和語/漢語)
5CitationKodokan Judo (Kano, 1986)
Alias sources — [1] Kodokan Judo (Kano, 1986) [2] Best Judo (Inokuma & Sato, 1979) [3] Kodokan New Japanese-English Dictionary of Judo (IJF, 2000)
6CitationMuay Thai: The Art of Fighting (Kraitus, 2002)
Effectiveness sources — [1] Kodokan Judo (Kano, 1986)
Community
Athletics
Requires
grip strength, upper body endurance, balance under pressure
Favours
strong arms and shoulders, stable base
Key muscles
forearms, deltoids, core, hip muscles
Frequently Asked Questions
How do I set up an osoto otoshi when my opponent is stiff-arming me?
Place your heel right behind your opponent's knee where it flexes backward. Their stiff-arm actually pushes them away, which you can use to your advantage. Lean forward slightly to prevent them from reversing the throw.
What's the key principle when executing ken-ken throws like ouchigari?
Pull your opponent forward to make them resist, then sweep their foot as they start to move back. Seiryoku Zenyo emphasizes that if you feel your opponent can counter you, you must abandon the throw immediately—only commit if there's no way they can reverse it.
Where should I grip the collar when setting up throws?
Shintaro Higashi recommends gripping high on the lapel near the collarbone rather than low by the chin. Gripping high prevents your opponent from going underneath while maintaining better posture control.
How do I prevent my opponent from posting their arm during grip fighting?
Change your angle of attack by moving to the outside rather than staying squared up directly in front of them. By pushing their power hand toward the hip and moving to the outside, you force them to reach across their body to post, making it much harder for them to defend.
How does the Right-Right Ai-Yotsu work?
The Right-Right Ai-Yotsu positions both fighters in right-handed stance, with each gripping left hand on the collar and right hand on the sleeve in a symmetrical right-side-forward configuration. This is the most common matchup in judo, as the majority of competitors fight right-handed.
Where does the Right-Right Ai-Yotsu come from?
Right-right ai-yotsu is the default judo matchup and the configuration for which the majority of judo techniques were originally designed and taught. Jigoro Kano's original curriculum was built around right-handed technique execution, establishing right-right ai-yotsu as the foundational judo fighting stance.
Is the Right-Right Ai-Yotsu legal in competition?
Unified MMA: legal — Legal — clinching is integral to MMA; IJF: legal — Legal — kumi-kata (grip fighting) is fundamental to judo; IBJJF: legal — Legal — standing grip fighting and clinch work permitted; IFMA: legal — Legal — the clinch is a core element of Muay Thai, clinch dominance is highly…; WBC/Boxing: restricted — Holding is technically a foul — referee breaks clinch, excessive holding resu…; K: restricted — 1/GLORY — One attack from clinch allowed, then referee breaks; WAKO: restricted — Clinch generally broken by referee — limited or no clinch fighting in most fo…; UWW: legal — Legal — clinch is fundamental to wrestling, the primary position in Greco-Roman
How dangerous is the Right-Right Ai-Yotsu?
Danger rating 2/10. Low — grip fighting is primarily positional; finger/wrist strain risk
How do I set up the Right-Right Ai-Yotsu?
The standard setup chain: Close Distance → Establish Primary Grip → Position the Hips → Apply Pressure.
How do I defend against the Right-Right Ai-Yotsu?
Standard counters include: Pummeling — fight for inside position by swimming arms under opponent's grips / Frame and Push — create distance using forearm frames against the chest or neck / Grip Break — systematically strip the opponent's controlling grips / Posture Up — straighten the spine and drive the hips forward to break clinch control.
What are the variants of the Right-Right Ai-Yotsu?
Common variants: Standard variation (primary clinch configuration from the most common entry); Gi variation (adapted with collar and sleeve grips for gi-based grappling); No-gi / MMA variation (modified for no-gi or cage fighting conditions); Offensive variation (configured to set up strikes, takedowns, or submissions f…).
How effective is the Right-Right Ai-Yotsu in competition?
Right-right ai-yotsu is the most common grip configuration in judo competition, as the majority of judoka are right-handed. This grip pattern appears in the majority of matches at Olympic and World Championship level.
What are common mistakes when doing the Right-Right Ai-Yotsu?
Top errors to watch for: Accepting a shallow right-hand grip when the opponent has a deep one — fight to equalise or break their grip / Using only right-side throws — add left-side counters (e.g., left ouchi gari) to surprise the opponent / Standing in a static mirror with matched grips — use push-pull, circles, and feints to break the symmetry / Not training grip-break sequences for the right-right position — each side has specific vulnerabilities.
What are other names for the Right-Right Ai-Yotsu?
The Right-Right Ai-Yotsu is also known as Migi Ai-yotsu, Migi Ai-Yotsu, Right-Handed Same Grip, Orthodox Ai-Yotsu.