Last updated: May 25, 2026
Quick Definition
In MMA, a downward elbow is an elbow strike that travels in a straight vertical line, like the hand of a clock moving from twelve down to six. Officially called a “downward elbow strike” in the Unified Rules of MMA, it is commonly known by fans and commentators as a “12-6 elbow.”
What is a downward elbow?
A downward elbow is defined by the trajectory of the strike, not by where it lands or the position of the fighter throwing it. The arm is raised so the elbow points up, then driven straight down so the point of the elbow makes contact along a vertical line. Veteran MMA referee John “Big John” McCarthy popularised the clock analogy that gave the strike its nickname: the elbow moves from twelve o’clock to six o’clock on an imaginary wall clock. Any deviation from that vertical line, even a slight arc, produces a different elbow strike entirely.
The term is most often heard during ground-and-pound exchanges, in commentary about MMA rule debates, and in discussions of the controversial 2009 disqualification of Jon Jones. For more than two decades, it carried a specific legal weight in the sport: under the Unified Rules of MMA, all elbow strikes were legal except this one.
How the downward elbow works
The strike is thrown almost exclusively from top positions on the ground. A fighter in mount, side control, or a sprawl raises the arm vertically, keeps the line straight, and drops the point of the elbow toward a target on the opponent below. Because the path is vertical and the wrist is not driving the motion, the strike borrows force from gravity in addition to the muscles of the shoulder and back.
What separates the downward elbow from other elbow strikes is one detail: the path is a straight line, not an arc. A horizontal elbow, an upward elbow, a spinning back elbow, and the slashing diagonal elbow all travel through curves. The downward elbow does not.
Downward elbow vs other elbow strikes
Most elbow strikes legal in MMA share one feature: they travel along an arc. The downward elbow is the outlier. The table below shows how it compares to the other main elbow strikes in the sport.
| Elbow strike | Direction of travel | Common position |
|---|---|---|
| Downward elbow (12-6) | Straight vertical, top to bottom | Ground-and-pound from mount or side control |
| Horizontal elbow | Side to side, across the body | Clinch, ground top control |
| Upward elbow (uppercut elbow) | Bottom to top | Clinch, close range standing |
| Slashing elbow | Diagonal arc across the face | Standing or clinch |
| Spinning back elbow | Rotational arc | Standing, on a turn |
The distinction between vertical and arced motion is the heart of the rule that historically governed elbows in MMA. As Matt Hume, chief referee at ONE Championship, summarised the absurdity of the line: “if you change the time to 11:59, it is no longer illegal.” A one-degree change of angle turned the same striking surface, thrown from the same position, into a legal blow.
Is the downward elbow legal in MMA?
Yes, as of 1 November 2024. The downward elbow was illegal under the Unified Rules of Mixed Martial Arts from their inception in 2000 until 1 November 2024.
The ban traces back to the 2000 meeting in New Jersey, where the Unified Rules were written. Doctors raised concerns about 12-6 elbows after seeing an IFC match where they were used to the back of a fighter’s head, and one doctor refused to sanction any ruleset that did not prohibit them. Two safety risks were cited: damage to the orbital bone and spinal injuries in fights between fighters of widely different sizes, since weight classes were not yet standardised. Then there was the famous ice-block story. Joe Rogan repeated it often on UFC commentary: that commissioners had seen traditional martial artists breaking concrete and ice with downward elbows and concluded the strike was too dangerous for the cage. Keith Kizer of the Nevada State Athletic Commission later dismissed that version as “revisionist history.”
The text of the rule itself spelled out the distinction: only elbows thrown “in a downward trajectory (hand traveling from 12 o’clock to 6 o’clock)” were illegal. Any elbow thrown with an arc remained legal, regardless of how much force it carried.
The single most cited incident under the old rule was the 2009 disqualification of Jon Jones. At The Ultimate Fighter 10 Finale in December 2009, Jones was dominating Matt Hamill from full mount when he threw a series of downward elbows, and referee Steve Mazzagatti disqualified him. The loss remains the only one on Jones’s professional record and became the rule’s most visible flashpoint.
The rule unwound in 2024. On 23 July, the Association of Boxing Commissions and Combative Sports MMA committee voted to remove the 12-6 elbow from the list of fouls. The change took effect on 1 November, and the UFC implemented it the following night at UFC Fight Night in Edmonton. State athletic commissions still have to adopt the updated rules individually. That means the strike’s legality can vary slightly by jurisdiction.
Frequently Asked Questions
Why was the downward elbow banned in MMA?
The original justification was fighter safety, with concerns about cuts to the orbital bone and spinal injuries in mismatched fights. Referees, including ONE Championship’s Matt Hume, later argued the rule was inconsistent, since other legal elbow strikes could generate equal or greater force with the same striking surface.
Are downward elbows legal in the UFC now?
Yes. The UFC adopted the rule change for its 2 November 2024 event in Edmonton, the night after the Unified Rules amendment took effect. Fighters can now throw downward elbows in all UFC bouts, subject to the rules of the local athletic commission.
What’s the difference between a 12-6 elbow and a regular elbow?
A 12-6 elbow travels in a straight vertical line. Every other legal elbow strike travels along an arc: horizontal, diagonal, upward, or spinning. The trajectory is what defines the strike, not the target or position.
Is the rule the same in every MMA promotion?
No. The Unified Rules act as a guideline that each athletic commission chooses to adopt. Most major US commissions follow the UFC’s interpretation, but some regional promotions and international jurisdictions can apply different versions.
Sources
- Wikipedia. “12-6 elbow.” Accessed 15 May 2026.
- Association of Boxing Commissions and Combative Sports. “Unified Rules of Mixed Martial Arts.” abcboxing.com. Accessed 15 May 2026.
- CBS Sports (Shakiel Mahjouri). “Commission removes 12-6 elbows from Unified MMA rules, updates grounded opponent rule.” 23 July 2024.
- MMA Weekly. “Illegal elbow ban lifted for unified MMA rules, Jon Jones reacts.” 24 July 2024.
- MMA Weekly (Jeff Cain). “The 12-to-6 Illegal Elbow Explained.” 14 March 2015.
- EssentiallySports. “What Is a 12-6 Elbow? Controversial Move That Got Jon Jones His Only UFC Loss Explained.” November 2024.
- Heavy.com. “Explaining the New MMA Rules That Debuted at UFC Edmonton.” 3 November 2024.
- MMAjunkie (Steven Marrocco). “The strange story of MMA’s most misunderstood illegal elbow strike.” 13 January 2014.
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