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10 votes
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Do pins in judo have to be standard pins?

That's barely a modification of kesagatame. There's no gi, so he uses a slightly different grip. It totally counts. Just about all techniques, including pins, are modified in actual application. This ...
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10 votes
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In Tournament or Competition Judo can you use improvised techniques or throws that are not "officially" named?

Judo competition is not graded on the name of the technique you do. It's graded on whether you throw the opponent on their back, pin them, strangle them, put them in an armlock, or break the rules. So ...
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9 votes
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Are Omoplatas legal in judo?

Yes, omoplatas are considered a variant of ashi-gatame or hiza-gatame.1 3 The IJF Referee Commission has confirmed their legality on multiple occasions,1 2 both as a submission, and as a turnover: ...
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7 votes

Why is ude-garami legal if it is effectively a shoulder lock?

Original intent of rule The phrasing "kansetsu-waza applied to the elbow joint"b is used by the Kodokan to describe joint-locks which achieve their effect by: straightening or bending the ...
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7 votes
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Are arm-triangle chokes legal in Judo?

Yes, arm triangles are legal provided you trap one of uke's arms with their head. According to the IJF Refereeing Seminar 2018: An action like kata-sankaku (sankaku done with the arms) is allowed ...
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7 votes

Do pins in judo have to be standard pins?

Yes, the above technique would be a pin in competition judo. A pin in competition judo does not need to be a standard pin; it needs to meet the definition of a pin under the referee rules. This is ...
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7 votes
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Why is the pistol grip banned?

Judo competitions have a lot of rules, and these rules are tweaked for most Olympic cycles. A primary driver of rule modifications is to promote attacking for a positive score and discourage "...
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6 votes
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Are mouth guard the same for all sports?

No they are not. The mouth guards are designed to protect against different kinds of impact most common to sports. You have the top only mouth guard which is meant to be something between your teeth ...
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6 votes

Are Hammerlocks legal in judo?

The Kodokan considers both armbar and bent arm arm-locks "locks applied to the elbow joint", since both involve locking the elbow joint to achieve their effect (locked straight and inverted, ...
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6 votes
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Why aren't forbidden moves in grappling sports like Judo and BJJ also a problem in MMA?

Usefulness of "dangerous" moves why haven't we seen more people landing badly (or purposefully) on legs and breaking them? Because it's actually really hard to cause damage with these ...
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6 votes
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What sort of throws are illegal in Muay Thai and why?

I think Sylvie conveys the right feeling in this article: I’ve fought over 100 times in Thailand and honestly I have never had a completely clear picture of what is and is not a legal throw in Muay ...
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5 votes
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Is the crucifix a valid osaekomi-waza?

I do not know exactly what "crucifix" means to you, but will try to explain how I have seen this term used and how your examples relate. Judo rule change My understanding of the rule change you ...
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5 votes

Why were leg grabs removed from competitive judo?

I have seen no official documentation for this decision, so I can only relay what I have heard from international referees on this subject. Olympics The word in US referee clinics at this time was ...
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5 votes
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Is there a pin in Judo that cannot be classified as a standard pin?

Unconventional osaekomi-waza Most legally scoring pins come under one of the 10 osaekomi-waza classifications. However, I have seen a couple of unconventional pins which as far as I am aware do not ...
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5 votes
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Osoto-gari grabbing uke's neck or hair

Grabbing neck to throw This is illegal. Judo kata has many techniques that are forbidden in sport judo because it is only safe to practice them in controlled situations. As a referee I would call ...
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5 votes

Reliable Statistics About Martial Arts

What you're looking for is martial arts demographics. And you want world-wide demographics. Both of which seem kind of hard to come by. The demographics you're looking for might be along the lines of:...
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5 votes

How do martial arts relate to squatting?

Honestly, I think that Giulia Enders is using an artistic metaphor to conjure an idea of someone squatting in a relaxed but engaged position in much the same way that you might describe someone ...
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5 votes

Why is wrestling considered an Olympic sport whereas karate and kung fu are just considered martial arts?

TL; DR: It has to do with the fact that they have separate international governing bodies (see breakdown below). The Olympics have a tiered classification system, that can be a bit confusing if you ...
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5 votes

Why is the pistol grip banned?

I will start with a disclaimer. This is a little bit outside my area of expertise since I am relatively new to judo. That said: From what I can tell a pistol grip does appear to be legal in Judo, ...
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4 votes
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Dementia Pugilistica and Chronic Traumatic Encephalopathy: How to know when to call it quits?

Currently there's no diagnostic assay for CTE. There's no treatment, nor is there any cure, either. According to Alzheimer's Association, the symptoms of CTE include: Memory loss. Confusion. ...
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4 votes

Are there any Judo techniques which are illegal in BJJ?

The IBJJF specifically bans1 two judo-throws where uke lands on their head/neck. Despite the IJF prohibiting throws which "may endanger or injure the opponent especially the opponent’s neck or spinal ...
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4 votes

Reliable Statistics About Martial Arts

I do not believe so. I know of no such data being available world wide, nor would I trust any such. Mostly because even something as "number of people insured" is not precise enough. Also, some ...
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4 votes

Are Biceps Slicers legal in judo?

I was taught a compression armlock by a US national referee. I am not formally familiar with the term bicep slicer, but your description of the armlock matches exactly what I learned. It's a joint ...
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4 votes
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How many international judo competitors throw ambidextrously?

From the Judo Chop Suey Podcast, Episode 26: Interview with Christopher Round at ~49:18, the interviewee Christopher Round, a former US Olympic hopeful, addresses this point while discussing where he ...
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3 votes

Are Hammerlocks legal in judo?

I will answer as best I can, but I expect more experienced referees may disagree. This is an example of when the Kodokan classification is not very useful given the very different applications it ...
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3 votes
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Why was blue chosen to distinguish competitors' judo-gis?

One major reason for the change (in addition to making refereeing easier) was to make judo more appealing to TV audiences, and in this the IJF explicitly disavows any responsibility to adhere to ...
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3 votes

Are arm-triangle chokes legal in Judo?

Just to add to mattm's answer - the IJF has now codified its position in the current ruleset: So in short, the following submissions are/aren't legal: Technique Legal Anaconda ✅ Kata-gatame ✅ D'...
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3 votes

Do pins in judo have to be standard pins?

The IJF criteria for osaekomi-waza are thus (emphasis mine): The referee shall announce osaekomi for an applied technique when the contestant being held is controlled from every direction (from the ...
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3 votes
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Are there any Judo techniques which are illegal in BJJ?

Daki Age (High Lift, Slam) In judo, to escape from your opponent's guard position, you can stand up and pick them up off the mat. Once you have them off the mat, a referee will call matte and reset ...
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3 votes

Why is wrestling considered an Olympic sport whereas karate and kung fu are just considered martial arts?

Note: As of Tokyo 2020, karate is an Olympic sport. Whether a sport is recognised as an Olympic sport is ultimately up to the International Olympic Committee (IOC). To qualify, a sport must ...
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