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How much is the groin open for an attack in full guard in different stages?

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(Bruce Lee in Way of the Dragon)

Especially, in the stage 3 of the Gracie system:

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It seems like groin is quite open, for example it seems it could be hit by an "uppercut" under the leg. Or, in situations like the one below, spread the legs and hit in a similar way as Bruce Lee did above:

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Note that I don't consider any rules of the BJJ sport, I think about its application in self-defense situation.

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Here is how I (judo training, no BJJ training) think of the two presented positions:

Position 1: opponent on knees

The opponent is on their knees, so attacks are limited to their arms. There is no direct line of attack to the groin, so you can defend arm attacks by either disrupting the opponents balance with your legs or attacking the elbows with your feet.

Presumably you will either transition to attack including your arms or create additional separation to get up.

Position 2: opponent standing

At this point I feel vulnerable on the bottom. The opponent is standing, with ability to use both their hands and feet, while on the bottom, there is no contact with the hands. There is danger of the standing opponent disrupting your feet/leg defense with their hands and stomping on your groin with their feet.

In these video situations, the opponent just seems intent on punching you in the head, which is not the problem you have asked about.

With the initiative on the bottom, I would press the opponent off sharply to create separation and come to a standing position.

  • attacking elbows with my feet? What do you mean? – Tomas Jan 17 '18 at 3:29
  • @Tomas You can defend attacks from your opponent's arms by disrupting the elbow or simply place your foot/knee there to jam them. – mattm Jan 17 '18 at 13:55
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If you go for a groin strike in someone's full/open guard that's a one way ticket to being triangle choked, arm barred, swept, getting your back taken, and a host of other things that will end the fight, and your life. So sure, you might get hit in the groin, but you're also going to choke the other person to death. You can see in your Bruce Lee clip that he is a simple arm drag away from a triangle choke. He's also open to a variety of sweeps and back takes.

This reminds me of Bas Rutten explaining why eye gouges are a garbage technique to someone that said they would gouge his eyes if he had them in a rear naked choke. If you go for the eyes, you might get a nice little poke, but you're also being choked to death. Defending against the choke is priority #1.

Quick and easy damage is not the goal in a fight. Finishing the fight is the goal.

Edit: I should add that this is also why we don't see many kidney shots from full guard as well. Committing an arm that low is extremely dangerous. If you're going to strike without passing the guard, you pretty much need to go to the head (of course there are exceptions). Dropping elbows to the face while maintaining your posture (kneeling, or one leg up) is the safest route.

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    well, if you get hit in the groin, I doubt you would be able to set up a technique after you've been hit. Maybe, maybe, you would be able to finish a technique that is already set up... but this is not the case here.. – Tomas Jan 15 '18 at 20:50
  • @Tomas I've done it many times. Being in pain sucks, but adrenaline is an amazing thing. – coinbird Jan 16 '18 at 16:19
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    @Sardathrion you don't have to explain this. You should have rather add that it is part of good culture to explain downvotes. This helps to distinguish an answer which is merely unliked from an answer which is plain wrong. – Tomas Jan 17 '18 at 3:26
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    @Sardathrion Indeed it has. "I use them (comments) to ask for clarification, explain how the answer could be better, or just why I think the answer is worthless -- down vote." - you – coinbird Jan 18 '18 at 15:18
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    @Sardathrion Hah! Here you go: martialarts.meta.stackexchange.com/a/371/8174 My point was it's not black or white. There is absolutely a place for explaining a downvote. I can also see how it would lead to abuse. In a perfect world where everyone ignores their ego, explaining downvotes would lead us to better answers. – coinbird Jan 18 '18 at 16:29

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