Fight Stats · Submissions

The leg lock that never arrived

Name: The leg lock that never arrived
Creator: Fight Stats
Published: 2026-08-11T00:00:00.000Z
License: https://creativecommons.org/licenses/by/4.0/

Grappling spent a decade rebuilding itself around one hold: the heel hook. Inside the UFC cage there are whole years with none at all — and almost every one that lands now belongs to the same heavyweight.

The question

Did the leg-lock revolution ever reach the UFC?

The received wisdom

Leg locks are taking over in submission sports, and once skilled practitioners arrive in the UFC they will take over there too.

TLDR; Quick Facts

1.03 → 0.39

leg submissions per 100 men’s fights · before 2015 — since

The expectation was a rising line. Leg submissions did not rise. They fell by 62%, over exactly the decade grappling spent rebuilding itself around them.

0.4 → 0.24

heel hooks per 100 · interval on the difference −0.11 to 0.43

And the technique itself — the one the whole shift was built on — has not moved at all. Eleven heel hooks in the modern era against twelve in the one before it. That interval contains zero.

4.5 → 1.63

arm submissions per 100 · fall of 2.87 [2.04, 3.69]

It is not that limbs went out of fashion selectively. Arm submissions fell harder than legs did, and by a wider margin than anything else on the page.

16.62 → 15.1

neck submissions per 100 · interval -0.16 to 3.21

Only the neck held. That interval contains zero, which is the honest way of saying the choke is doing exactly what it always did while both limb attacks receded.

18 — 31

leg submissions in the modern era — the one before

In raw counts, on a larger sample. 4603 modern fights produced 18 leg submissions; 3002 older ones produced 31. More fights, fewer legs.

In short

The most convincing stylistic revolution grappling has produced in twenty years did not cross over. Leg submissions in the UFC are rarer now than they were before the heel hook era began, the heel hook itself is flat, and the only attack holding its ground is the one nobody claimed was being revolutionised. Whatever is true in a submission-only tournament, the cage has not agreed to it.

Somewhere around 2016, the most interesting thing happening in grappling was happening below the knee. A generation of competitors built entire games out of tangling their legs with yours: you trap a foot, twist the heel, and the knee comes apart before the pain arrives to warn anyone. It is fast, it is ugly, and it made the heel hook the most talked-about hold in grappling — with a whole vocabulary of its own, ashi and fifty-fifty and the saddle. Submission-only tournaments started finishing that way more often than any other.

It is one of the clearest stylistic shifts the grappling world has produced, and it is the kind of thing that eventually shows up in mixed martial arts. Wrestling did. The guillotine did. The rear naked choke did, so completely that it now ends more UFC fights than every limb attack put together.

So the natural expectation is a rising line. Thirty-two years of results say the opposite — and the man who lands the most of them was born after the argument started.

A fighter attacking a heel hook. — The technique that rebuilt grappling

Everyone expected one of these three to rise

The limbs lost. The neck just stood still.

Every men's fight in the database, split by what the submission attacked, measured as a share of all fights rather than of all submissions — so a change in how often fights go to the mat at all cannot disguise itself as a change in technique.

Arms

Armbar, kimura, keylock, omoplata

Not the arm triangle, which shares a word with the armbar and nothing else — it attacks the neck, and it is counted there.

Before 20154.50%

2015 onwards1.63%

Down 64%. The armbar alone fell from 102 finishes to 54 across an era with 53% more fights in it. Difference 2.87 points, interval 2.04 to 3.69 — nowhere near zero.

Legs

Heel hook, kneebar, ankle lock, toe hold

Not the calf slicer or the Suloev stretch. Both attack a leg; neither is a leg entanglement. Counting them anyway adds eight finishes in thirty-two years and moves the figure below by nothing.

Before 20151.03%

2015 onwards0.39%

Down 62%, in the exact decade the technique was supposed to take over. Difference 0.64 points, interval 0.24 to 1.05.

Neck

Rear naked choke, guillotine, triangle, D'Arce

And every other choke, the arm triangle included. Grouped by what is attacked rather than by how, which is why a neck crank sits here too.

Before 201516.62%

2015 onwards15.10%

No change we can establish. Difference 1.52 points, interval −0.16 to 3.21 — it contains zero, so the honest reading is that the neck rate held.

Men's divisions only. 3,002 fights before 2015, 4,603 from 2015 to the end of 2025. Method and round are recorded for every bout back to 1994, so unlike the per-fight statistics these figures can use the whole history.

How far each target fell · submissions per 100 men’s fights, before 2015 against since

Arm submissions 2.87

Fell

Leg submissions 0.64

Fell

Neck submissions 1.52

No change

Heel hooks specifically 0.16

No change

← rosefell →

One quantity throughout: submissions per 100 men’s fights, the era before 2015 minus the era since. Positive means the attack became rarer. Both limb attacks fell clear of the line and the neck did not move — and the heel hook, the technique the entire expectation was built on, sits on the line with everything else that did nothing. 3002 fights before the split against 4603 after.

Nearly nine in ten submissions are now a choke

A bigger slice of a smaller game

That third panel is the one that reframes everything. Neck submissions now make up 87.3% of every men's submission finish, up from 72.3% — which reads like the choke game conquering the sport. It isn't. The neck is finishing fights at almost exactly the rate it always did. Its share went up because everything around it fell away.

The green sliver is the leg locks. Watch it halve.

Before 2015 665 submissions

Neck75.0%499
Arms20.3%135
Legs4.7%31

2015 onwards 788 submissions

Neck88.2%695
Arms9.5%75
Legs2.3%18

Shares of the submissions whose target is recorded — 665 before the split and 788 since, which is why the neck reads a little higher here than in the paragraph above. The leg wedge is pulled out because it is the smallest thing on either pie, and it halves.

The submission game did not get more sophisticated. It got narrower.

Heel hooks in 4,603 modern men's fights. If the pre-2015 rate had simply held, there would have been about eighteen. The revolution's signature technique did not grow — it very slightly shrank.

Twelve before 2015. Eleven since.

The heel hook itself did not move

Eleven is the number worth sitting with, because it is the one place where the honest answer is not a decline. Twelve heel hooks before 2015, eleven after. The interval on that difference runs from −0.11 to 0.43 percentage points, which contains zero comfortably — we cannot say heel hooks became rarer, and anyone claiming they did is reading noise.

What we can say is much simpler, and worse for the thesis: they did not become more common. Across the exact decade the technique was being systematised, refined and taught to everyone, the rate at which it ends a UFC fight moved by an amount indistinguishable from nothing.

Meanwhile the leg submissions that were already in the sport quietly emptied out. Kneebars went from eleven finishes to five. Ankle locks from seven to two. Toe holds from one to none. The category shrank because everything in it except the heel hook stopped working, and the heel hook stayed flat.

Eleven, spread across a decade. Here is what that looks like laid out — one mark a year, every year the sport has existed.

One mark per leg submission, 1994 to the last full year

In 2023 the UFC ran 428 fights and not one ended at the leg

One mark per leg submission in the men's divisions. The white marks are Valter Walker; the pale marks are Rousimar Palhares. Between them they hold a fifth of everything on this chart.

2015 →

Men's divisions only, and the same four holds throughout — heel hook, kneebar, ankle lock, toe hold. Seven of the thirty-two years hold no leg submission at all.

Fifty cards, one for every leg submission on record

Thirty-six men did it once. Four kept coming back.

The forty-nine finishes the field above plots, plus the one from May 2026 that lands past its last full year — fifty cards, one each, running left to right from Marco Ruas in 1995. Twenty-four are heel hooks and carry a green mark; the rest are kneebars, ankle locks and the single toe hold. Scroll right to walk forward through the sport.

Men’s divisions, every leg submission on record. The oldest sits at the left because this story is an argument about something that did not grow — and that argument is a walk forward through thirty-two years, not a glance at what happened most recently.

A fighter isolating a kneebar. — Almost all of it, one specialist

Valter Walker, four heel hooks, fourteen months

Four of the eleven belong to one man

Valter Walker, UFC heavyweight, standing with gloves on.

From August 2024 to the end of 2025, every men's heel hook in the UFC was won by Valter Walker. Four fights, four heel hooks, fourteen months: UFC 305, then Cannonier vs Rodrigues, then Lewis vs Teixeira, then UFC 321. He is the entire modern leg-lock era, and he is one heavyweight.

The run broke in May 2026, when Kody Steele landed one at Della Maddalena vs Prates — the first men's heel hook by anyone other than Walker in twenty months. That is the scarcity this story is about, arriving as its own punchline.

Take him out and the picture gets starker rather than softer. Seven heel hooks remain across 4,603 fights — one every 658 fights, or roughly one a year in a promotion that now runs more than four hundred men's bouts annually.

This is what a technique looks like when it belongs to specialists instead of to the sport. Compare it with the rear naked choke, which is finished by hundreds of different fighters because it is simply part of how everyone fights. The heel hook is not part of how everyone fights. It is a thing four or five people in the world do to everybody else.

Which is exactly what the leg-lock revolution was supposed to stop being.

Most leg submissions, all time

Rousimar Palhares 2009–20135 Heel hook and kneebar · all of them before the revolution began Valter Walker 2024–20254 Heel hook only · all four inside fourteen months Claudio Puelles 2018–20223 Kneebar only Frank Mir 2003–20082 Kneebar and toe hold

Nobody else in thirty-two years has more than two. Men's divisions.

Buffalo, 7 September 1995

It was the very first thing anyone tried

The origin story UFC 7: The Brawl in Buffalo · Buffalo, New York · September 7, 1995 From the archive

Marco Ruas Ends It At The Ankle, Thirty Years Early

The first leg submission in the UFC's recorded history is a heel hook — landed before there were rounds, weight classes, or a word for what he was doing.

An open-weight bout, three minutes and twenty-three seconds in, and Ruas takes Larry Cureton's leg instead of his neck. Nothing about the sport in 1995 suggested that was the sensible option; the Brazilian did it anyway, and the archive has carried it as instance number one ever since. Thirty years and 8,000 fights later, the technique he opened with has been landed eleven times in the modern era. The revolution everybody has been waiting for turned out to have already happened, on the first night anyone thought to look down.

Editor's note: outcome data — method, round and time — is recorded for every bout back to 1994. Per-fight statistics are not, which is why this story is built on finishes rather than attempts.

The reading, not the finding

You have to give up your back to get to the leg

The data cannot tell you the mechanism, only that the gap is real, so treat what follows as the reading rather than the finding. But the shape of it is not mysterious.

A leg entanglement asks you to give up your posture, your base and often your back to attack a limb attached to a person who is allowed to punch you. In submission grappling, that trade costs nothing. In a cage it costs everything, and the fighter on top of the entanglement gets to answer with elbows while you work.

The neck does not have this problem. Every choke in the top four arrives from a dominant position you already wanted for other reasons — the back, the mount, the front headlock. Nobody has to accept a worse position to hunt a rear naked choke. Almost everybody does to hunt a heel hook.

The techniques that thrive in MMA are the ones you get for free from a position you were already trying to reach.

That also explains the armbar's collapse, which is the larger and better-evidenced half of this story. The armbar is the classic guard attack, and the guard has spent twenty years becoming a worse place to be in a cage. As the sport learned to defend and to punish from the top, the submissions that live underneath somebody went with it.

Four women’s leg submissions, all kneebars, none by heel hook

The cage does the same thing to both

Women's leg submissions in UFC history: four, all kneebars, none by heel hook. Set against men of comparable weight — flyweight and bantamweight, the fair comparison, because women fight only at the light end and weight bends almost every submission statistic — the rates are indistinguishable.

0.47% of women's fights against 0.33% of comparable men's, a difference of about a seventh of a point on an interval running from -0.45 to +0.74. That is about as close to a null result as this database produces — and note that the small edge runs towards the women, not away from them.

It is worth stating plainly because it strengthens the main finding rather than complicating it. Whatever is suppressing leg attacks in the cage is not doing it to one sex. It is doing it to the position.

The women's game does diverge sharply on submissions — but on the arms, not the legs, and by a margin large enough that it needs its own story.

Leg submissions per fight, 2015 onwards

Women's divisions0.47% 4 of 845 fights Men's fly & bantamweight0.33% 3 of 912 fights Difference+0.14 pts 95% interval -0.45 to +0.74 — contains zero All men's divisions0.39% 18 of 4,603 fights

Compared against comparable-weight men rather than all men, because women fight only in the lighter classes and a straight comparison confounds sex with weight.

Two fighters grappling on the mat in a gym.

What this means for your training

Stop training leg-lock defence as insurance

Neck submissions end 15.1% of men’s fights. Leg submissions end 0.39%. That is a ratio of nearly forty to one, and very few defensive sessions are split forty to one.

Check the split against what actually finishes fights

Count it, honestly, over your last eight weeks. If defensive mat time follows what the grappling internet talks about, the split will not look anything like the split of what actually ends fights — and the gap is not close. Write the two numbers on the whiteboard and let the coaching staff argue with them.
One session a month is already too much

Concretely: if leg-lock defence is taking more than one session a month in a general camp, it is taking time from something that will decide more of your fights. The rear naked choke alone ends more men's fights than every arm and leg submission in the database combined.
The exception is a name, not a trend

The exception is a scouting exception, not a general one. Leg submissions in the modern UFC are concentrated in a handful of specialists to a degree almost nothing else is — four of the eleven heel hooks since 2015 belong to one heavyweight. If you draw one of those men, this becomes the most important thing in your camp for six weeks. If you don't, it is close to irrelevant. Check the opponent, not the trend.

None of which says the technique does not work — it says it has not spread. The heel hook is as productive in the cage as it ever was and no more so, and the men producing it are countable on two hands. That makes it a scouting problem rather than a curriculum problem, which is the opposite of how most camps are currently treating it.