Ippon seoi nage

Last updated: June 1, 2026

What is ippon seoi nage?

Ippon seoi nage is one of judo’s hand techniques, or te-waza, and it belongs to the Shinmeisho no waza group of throws recognised by the Kodokan, the school founded by judo’s creator Jigoro Kano. “Ippon” means one point or one arm, “seoi” means to carry on the back, and “nage” means throw. Put together, the term describes carrying an opponent across the back using a single arm and throwing them forward.

People usually translate it as the “one-arm shoulder throw,” and that translation is close enough for commentary, but it misses a detail worth knowing. As coach Shintaro Higashi points out, “seoi” actually means back-carry rather than shoulder, so the opponent travels over the back and shoulder together, not the shoulder alone.

The throw shows up constantly in competition because it works. Fight Encyclopedia describes it as one of the highest-percentage throwing techniques in judo, and it is a particular favourite of lighter, quicker fighters who can drop under a taller opponent and use speed instead of size. The Japanese great Toshihiko Koga built an entire career around it, winning Olympic gold at Barcelona in 1992 and three world titles with what many in the sport still call the finest ippon seoi nage ever thrown.

How ippon seoi nage works

The throw starts with kuzushi, the act of breaking the opponent’s balance toward their front. Once the opponent’s weight tips forward onto the balls of their feet, the thrower spins in, dropping their hips lower than the opponent’s and turning their back into them.

The defining feature is the arm. Instead of gripping with both hands, the thrower keeps a sleeve grip with one hand and threads the other arm up underneath the opponent’s armpit, clamping their arm tight against the shoulder. That single trapped arm becomes the lever. With the opponent loaded high on the back and their balance already gone, the thrower straightens the legs, leans forward, and rotates, sending the opponent over the top and onto their back.

Two things make or break it, and both are about position rather than strength. The hips have to sit lower than the opponent’s hips, because that is what lets a smaller person lift a larger one. And the arm has to be threaded deep, because a shallow grip lets the opponent rip free before the throw finishes.

Ippon seoi nage vs morote seoi nage

This is the comparison that confuses most people, and the difference comes down to how many hands grip the trapping arm.

Feature	Ippon seoi nage	Morote seoi nage
Grip on the throw	One arm threaded under the armpit	Both hands, one on sleeve and one on lapel
Translation	One-arm back carry throw	Two-hand back carry throw
Control vs speed	Faster entry, quicker to fire in a scramble	More control and structure, slower to set
Common users	Lighter, explosive fighters	Often taught first to beginners

Morote seoi nage keeps both hands on the opponent, which gives more control but takes longer to lock in. Ippon seoi nage frees one hand to dive under the arm. It is faster, but the timing has to be exact. The two are so closely related that judo did not always count ippon seoi nage as a throw in its own right. For years, it was treated as a variation, and to this day, many spectators simply call any version “seoi nage.”

Common variations

Ippon seoi nage is the most widely used member of a larger seoi nage family. A few relatives come up often enough that fans should recognise them.

Variation	What changes
Drop seoi nage (seoi otoshi)	The thrower drops to both knees instead of springing up, trading lift for a lower, faster entry
Eri seoi nage	The trapping hand grips the collar on the same side rather than threading bare under the arm
Reverse (Korean) seoi nage	The thrower grips the same-side lapel with both hands and spins away from the opponent, a version popularised by Korean judoka
Hidari ippon seoi nage	The mirror-image entry, where the thrower keeps the lapel grip and dives under the opposite arm

The reverse seoi nage has had a rocky relationship with the rules. The International Judo Federation banned it in 2022 over safety concerns, then allowed it again from 2025, except in cadet events, where it draws a penalty.

Ippon seoi nage in MMA and BJJ

Most casual fans first see this throw in judo, but it travels well into other grappling sports. Evolve MMA calls ippon seoi nage the most common form of the shoulder throw in both judo and MMA, since the one-arm version still works when a fighter cannot grab a clean lapel.

In Brazilian jiu-jitsu, the throw is less common, mainly because BJJ matches often begin with guard pulls and grip fighting rather than long-standing exchanges. When grapplers do use it, they tend to angle the throw off to the side instead of turning straight in, because turning your back fully invites the opponent to take it. The same problem exists in MMA, where exposing the back is risky, so fighters adapt the entry rather than copy the judo version exactly.

Common misconceptions

The biggest mix-up is the name itself. Plenty of people assume “shoulder throw” is a literal translation, when “seoi” refers to carrying on the back. The opponent rides across the back and shoulder together.

The second mix-up is treating ippon and morote seoi nage as the same move. They share the same loading mechanics, but the grip is different, and at high levels, that single detail changes the timing of the whole attack.

A third one trips up newer fans watching scoreboards. Throwing someone with ippon seoi nage does not automatically mean an “ippon” score. The word “ippon” in the throw’s name refers to one arm, not to the full point that ends a judo match, even though a clean version of the throw often does earn that score.

Frequently Asked Questions

What does ippon seoi nage mean?

It translates to “one-arm back carry throw.” The opponent is carried across the thrower’s back using a single trapped arm and thrown forward.

Is ippon seoi nage effective in competition?

Yes. It is regarded as one of the highest-percentage throws in judo and is especially favoured by smaller, faster fighters.

What is the difference between ippon and morote seoi nage?

Ippon seoi nage threads one arm under the opponent’s armpit, while morote seoi nage grips with both hands, one on the sleeve and one on the lapel.

Is ippon seoi nage legal in BJJ?

Yes, it is legal in gi competition as long as the grips and landing meet the event’s safety rules.

Who is most associated with ippon seoi nage?

Toshihiko Koga of Japan, an Olympic and three-time world champion, is widely seen as the throw’s greatest exponent.

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Sources

1. Wikipedia. “Ippon seoi nage.” Accessed June 2026.
2. Wikipedia. “Seoi nage.” Accessed June 2026.
3. judo.how. “Ippon-seoi-nage.” Accessed June 2026.
4. Evolve MMA. “What Is The Seoi Nage And How It Works For BJJ.” Accessed June 2026.
5. Fight Encyclopedia. “Ippon Seoi Nage.” Accessed June 2026.
6. Shintaro Higashi. “Morote-seoi-nage made easy.” Accessed June 2026.
7. International Judo Federation. “Toshihiko Koga: An Artist Has Gone.” Accessed June 2026.
8. JudoInside. “Toshihiko Koga was the greatest exponent of ippon-seoi-nage ever.” Accessed June 2026.

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