Right Against Left: Fighting Kenka-Yotsu

Your lapel hand keeps arriving at a chest that is angled away. Your sleeve hand is fighting another hand for the same small piece of air. The throws you own are all still there, but they are pointing a few degrees off the direction this body is standing in, and a few degrees is the whole of judo. Coaches estimate that most randori, and most contests, end up in this shape: right against left, kenka-yotsu. It is not the exception in your judo life. It is the default, and it has its own game.

The Kumi-Kata article in this series teaches the grip fight's foundations, including the lead hand battle and the first two seconds of kenka-yotsu. This article assumes those foundations and goes where they point: how the opposite-stance matchup is actually played after the opening, where your throws point in it, what their throws look like coming at you, and the small kit of attacks that turns the matchup from a weekly ambush into your home ground.

Section 01The Geometry That Changes Everything

In ai-yotsu, same stance against same stance, two chests face each other and each player's throwing side is mirrored by the other's. In kenka-yotsu the lead sides clash instead. Your lead foot stands close to their lead foot. Your lead shoulder is close to their lead shoulder. The lapel you normally take with your strong hand is on the far side of their body, behind the lead arm that is guarding it.

Three consequences follow, and everything in this article is one of them working itself out.

First, the space between your chests on the lead side is small and contested. Both lead hands want to work in it. Whoever owns that space owns the inside, and the inside is where the strong grips live.

Second, your throwing geometry rotates. Your forward throws no longer turn into a square chest; they turn across an angled one. Entries fitted to a square partner in ai-yotsu arrive early, late, or on the wrong leg in kenka-yotsu until they are re-fitted.

Third, their power hand and your power hand are on the same side of the fight. Their strong lapel hand reaches across the same contested space your strong hand wants. The matchup is unusually honest in this way: both players are fighting for the same square of cloth and air, and both know it.

Section 02Inside and Outside: The Two Addresses

Every kenka-yotsu exchange runs between two addresses, and naming them turns a scramble into a readable fight.

The inside position means your lead hand and arm are inside theirs, between their lead arm and their chest. From the inside, your hand is close to their lapel and back grips, your chest can come to theirs, and your big forward throws have a road in. The player inside is playing their own game.

The outside position means your lead hand rides outside their lead arm, controlling their sleeve or their arm from the far side. From the outside you own distance and their lead arm's behaviour. Your sleeve-side throws and your foot sweeps live here, and your defence is easier, because their power hand has a longer road to your chest.

Neither address is a permanent home. The fight is a negotiation between the two, grip by grip. What loses the matchup is not being outside. It is having no address at all: lead hand drifting in the contested space, holding nothing, blocking nothing, while their hand takes the inside and their lapel hand climbs.

Section 03The Fight After the First Grip

The Kumi-Kata article ends the opening with the inside won or lost. The matchup continues from there, and it has a second act most players never script: the fight for their power hand.

Their lapel hand, on their strong side, is the hand their big throws are thrown with. In kenka-yotsu it must cross the contested space to reach you, which means it travels through territory your lead hand and your sleeve control can tax. The matchup plan, in order:

1. Own their lead arm first. Your sleeve hand takes their lead sleeve or wrist area and keeps it busy and slightly extended. An occupied lead arm is a shield with a person attached: it stands between their power hand and your chest.
2. Occupy the inside with your lead hand when you mean to throw big, or work the outside deliberately when you mean to sweep and snipe. Drift is the only error. Either address, chosen, is a plan.
3. Tax the power hand's journey. As their strong hand crosses toward your lapel, it can be met, deflected, and made to arrive low or not at all. A power hand that lands low on your chest has landed as a pushing hand, not a throwing one.
4. Throw before the negotiation ends. Grips in kenka-yotsu are more temporary than in ai-yotsu, because both players' hands are busy stripping and re-taking. The exchange rewards the player who attacks during the other player's re-grip, in the half second when one of their hands is travelling.

Section 04Where Your Throws Point Now

Re-fitting your game to the angled chest is the matchup's technical core. The standard adjustments:

Two throws minimum per side is the standard this article sets: one forward throw re-fitted to the angle, and one ashi-waza that lives on the lead leg. A player with those two, plus the grip plan above, has a kenka-yotsu game. A player with their whole ai-yotsu syllabus pointed hopefully at an angled chest has a hope, not a game.

Section 05What Their Throws Look Like Coming at You

Their big forward throw, thrown with the power hand you have been taxing, turns across your chest the same way yours turns across theirs. Their uchi-mata leg attacks your lead leg, the leg between you, which is why that leg's habits matter: a lead leg planted flat and heavy in the contested space is a leg already half reaped. Keep it alive, stepping and re-stepping, and their best throw loses its target.

Their sleeve-side game mirrors yours: if they own your lead arm and the outside, expect sode and foot sweeps. Their cross grip, when it lands, is a throwing grip immediately, because in kenka-yotsu the cross grip is already most of the turn. Treat its arrival the way you treat a set osaekomi: the response happens now, not after you have considered it.

Section 06Movement: The Circle That Opens Your Side

Footwork in kenka-yotsu has a bias. Circling toward your own back side, away from the clash of lead feet, opens the angle your forward throws need and moves your lead leg out of their reaping range. Stepping straight into the clash shortens everything: the fight becomes a pushing contest in a phone box, which suits the stronger player and neither player's judo.

The subtle half is that the circle is also a kuzushi tool. As you circle, their lead foot must step to follow, and a stepping lead foot is a sweepable, reapable, landable-on lead foot. The ashi-waza row of the table above is mostly harvested off steps your circle created.

Section 07Where It Goes Wrong

Playing your ai-yotsu game unchanged. The grips, the entries, and the angles were all fitted to a square chest. Run unchanged into an angled one, they fail in ways that feel like the opponent's brilliance and are actually geometry. Re-fit the two throws of your minimum kit first. The rest of the syllabus can follow.

Reaching across for the far lapel. The long reach for the lapel behind their lead arm extends your arm, your chest, and your balance into their keeping, and donates your sleeve side in the bargain. The inside is won with the lead hand in the contested space, not with a lunge at a distant collar.

Fighting their lead hand with strength. Two lead hands locked in a pushing contest is a strength event with a referee's clock running. Position wins it: inside or outside, taken early, with the arm angle doing the work. If your forearm is burning, you are wrestling the hand instead of occupying an address.

Letting their power hand settle high. A high lapel hand landed and comfortable is the first half of their biggest throw already thrown. It is taxed on its journey or it is stripped on arrival. What it is never allowed is a settling-in period.

A statue's lead leg. Planted flat in the contested space, your lead leg is the target for their reaps, trips, and sweeps, all of which live on that leg. Light, stepping, re-stepping. The lead leg is a duellist, not a fence post.

Treating left-handers as a surprise. They are roughly half of every room and most of every contest draw, and their existence is not a disruption of your judo. If your randori diet is mostly right-handers, that is a scheduling fact about your club, and Part 15 of the companion guide is the fix: deliberate kenka-yotsu rounds until the matchup is the one you have practised most, not least.

Section 08The Companion Guide

This article gives you the knowledge. The companion guide turns it into training. The Opposite-Stance Gripping Cards prints the matchup on cards: inside and outside position cards, first-grip sequences for right-against-left and left-against-right, lead-hand battle drills with a ladder for winning the inside, power-hand denial cards, and recovery cards for the day their lapel hand settles first. It adds throw kit cards that re-fit your forward throws and your lead-leg ashi-waza to the angled chest, kenka-yotsu situational randori formats with a grip-fight scoring system, a two-throw minimum kit worksheet, and a matchup log that tracks which address you owned when your attacks landed. It is for the player whose judo is complete in one shape and rented in the other.