Last updated: June 17, 2026
Quick Definition
A half nelson is a wrestling hold in which one arm is threaded under the opponent’s arm, and the hand is placed on the back of their neck, used to turn the opponent onto their back and pin them.
What is a half nelson?
The half nelson is the workhorse pinning hold of amateur wrestling. A wrestler on top slides one arm beneath the opponent’s arm from behind, then cups the hand over the back of the opponent’s neck or head. From there, the arm levers the shoulder upward while the hand presses the head down, rolling a flattened opponent onto their back.
Most coaches hand it to beginners as the first turn they ever learn. Wikipedia’s reference on the Nelson family calls it the easiest pinning hold in folkstyle wrestling.
It belongs to a wider group of grips called Nelson holds, all of which wrap an arm under the armpit and secure it at the neck. The half stands apart for using just one. That leaves the other hand free to trap a wrist or hook a leg. MMA fans see it in scrambles, the moment a wrestler flattens a turtled opponent and starts prying a shoulder off the mat.
How the half nelson works
Recognizing it is easy once the shape clicks. The attacker sits behind and slightly to the side of an opponent who is face down or on all fours, and one arm disappears under the near armpit before reappearing with the hand clamped on the neck.
The turn comes from two forces pulling against each other. The hand drives the head toward the mat while the trapped arm lifts the shoulder up and across. Caught between them, the opponent rolls toward the exposed side, and the top wrestler settles chest to chest to finish the pin.
A defender does have answers. The most common one is to clamp the elbow down against the intruding arm and turn the head away, which stalls the lift before it builds leverage. That works best when the bottom wrestler can stay on their knees instead of flat, and it is why coaches warn against sinking the half until the opponent’s stomach is on the mat.
Half nelson vs. full nelson
This is the comparison that brings most people to the term in the first place. A half nelson uses one arm under one of the opponent’s arms. A full nelson uses both, threading under each armpit and locking the hands behind the opponent’s neck, then forcing the head forward.
That difference in arm count changes how the two get treated. A single arm lets a wrestler torque the shoulder without driving pressure straight into the spine. With both hands bending the head down, the full nelson turns into a neck crank, which is why it is banned across folkstyle and most amateur wrestling.
| Half nelson | Full nelson | |
|---|---|---|
| Arms used | One | Both |
| Main purpose | Turn and pin | Control only |
| Spinal risk | Low | High (neck crank) |
| Amateur wrestling | Legal | Illegal |
| MMA | Legal, common | Legal, rare |
The full nelson rarely earns its keep in a real fight because holding both arms up leaves nothing free to finish or strike with. The half keeps one hand working, and that is the whole reason it still shows up in modern grappling.
Types of nelson holds
The Nelson family runs from the lightest grip to the most aggressive, and each version takes its name from how much of the arm gets involved.
| Hold | What it does |
|---|---|
| Quarter nelson | One hand on the neck or chin, the free arm passed under the opponent’s arm and locked at the wrist. A control grip that can still secure a pin. |
| Half nelson | One arm under the arm, hand on the neck. The standard turning hold. |
| Three-quarter nelson | A half nelson plus the second hand passed under the body to the far side of the neck, then locked. More secure than a half. |
| Power half nelson | A half nelson reinforced by adding the second hand on top for extra pressure on the head. |
| Full nelson | Both arms under both armpits, hands locked behind the neck. Illegal in amateur wrestling. |
The naming follows the grip, not the effort. A quarter nelson barely commits one arm, while a full nelson commits both and crosses into illegal territory.
Is the half nelson legal?
In amateur wrestling, yes. The half nelson is legal at every level, from youth mats up through college, and its single-arm grip keeps spinal pressure low enough that governing bodies allow it without restriction.
The full nelson is the version that draws penalties. The NFHS, which writes the rules for U.S. high school wrestling, and the NCAA both prohibit it as a dangerous hold, and a referee can answer it with penalty points or a disqualification. Outside the amateur ranks, the rules loosen. MMA permits the full nelson, and the ADCC submission grappling ruleset allows it too, though fighters seldom bother with it.
Where the name comes from
The hold is older than almost anyone who uses it. The phrase “full Nelson” appears in print as early as 1873, when a coroner described its danger after a wrestling death in a Pall Mall Gazette report later logged by the Oxford English Dictionary.
Where the name itself originated is murkier. One account ties it to Admiral Horatio Nelson, the British naval commander who lent his name to several unrelated things. Another credits a wrestler called Bobby Nelson, who popularized the hold in professional matches. No record settles it, so both stories tend to travel together.
The half nelson in BJJ and MMA
Wrestling techniques travel well, and the half nelson made the jump into Brazilian jiu-jitsu and MMA nearly intact. A grappler facing a turtled opponent uses it much the way a folkstyle wrestler does, breaking the posture down and working toward the back.
What changes is what comes next. In wrestling, the half nelson ends in a pin. In BJJ, it more often opens a route to the back or sets up a choke, and some players even hunt a lapel choke straight from the grip. In MMA, a fighter uses the same control to flatten an opponent and peel a hand free for strikes. The hold stays the same; the finish depends on the rules of the game.
Frequently Asked Questions
Is the half nelson illegal?
No. The half nelson is legal at all levels of amateur wrestling. The full nelson is the version banned for safety in folkstyle and most amateur competition.
Does a half nelson hurt?
Applied correctly, it is uncomfortable rather than painful. The pressure goes into turning the shoulder and head, not into cranking the neck, which is what keeps it within the rules.
What is a power half nelson?
A stronger variation. The wrestler adds the second hand to the grip, locking it on top of the half-nelson arm to load more pressure onto the head and force the turn.
Can you escape a half nelson?
Yes. The standard defense is to clamp the trapped arm tight to your body and turn your head away from the attacker, denying the lift before it can roll you over.
Sources
- Wikipedia. “Nelson hold.” Accessed June 2026.
https://en.wikipedia.org/wiki/Nelson_hold - Oxford English Dictionary, cited in Wikipedia, “Nelson hold” (first recorded use, Pall Mall Gazette, 1873).
https://en.wikipedia.org/wiki/Nelson_hold - National Federation of State High School Associations (NFHS). Wrestling rules on illegal holds.
https://www.nfhs.org/sports/wrestling/rules - Human Kinetics. “Coaching Youth Wrestling.” 2003.
https://s3.amazonaws.com/my.llfiles.com/00224751/halfnelson.pdf - Elite Sports. “Ultimate Guide to the Half Nelson in BJJ.” Accessed June 2026.
https://www.elitesports.com/blogs/news/ultimate-guide-to-the-half-nelson-in-bjj - LowkickMMA. “The Full Nelson: A Complete Guide.” Accessed June 2026.
https://www.lowkickmma.com/full-nelson/
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