@stslavik Re: ground-grappling wristlocks - BJJ's mao de vaca is meant as a submission lock, not a lock for producing other results. Since a skilled grappler will escape if only their wrist is immobilized, standard practice for many (if not most) ground-grappling wristlocks is to immobilize the body through a pin or guard, then lock the wrist for the submission.
These techniques become more similar to a standing "come-along" than, say, kotegaeshi. I've always found it interesting that this is the opposite approach from most standing wristlocks.
Not in no-gi tournaments like ADCC, or black-belt level tournaments. I can't recall if California's Pankration rules or the MMA Unified rules count wristlocks as small joints or not...for MMA it would be swell if only fingerlocks were banned.
In defense from the ground, you're looking to use the minimal effort to combat your opponent. Arresting the whole body first would require exerted effort to control the torso and legs, making arrest of the wrist simply optional (you could just as easily control the arm, elbow, shoulder). When training to lock the wrist from a defense standpoint, you're doing so for two reasons:
1.) the wrist or hand happen to have been offered to you (they are opportunistic).
2.) You are intent to lock the whole body.
Doing so, you make his only relief to move to the stomach, which in turn limits his options further.
Ah, understood. One could make an argument for that. However, the increased influence of folk wrestling traditions worldwide makes this less certain. In fact, more often than not, BJJ practitioners focus more heavily on building their stamina to compete than on reducing their energy expenditure.
Indeed, but it's branded self-defense, derived from their existing brand of BJJ. They have an agenda – the promotion of their art.
Indeed, to an extent. The difference being that they're pushing material to counter the claims that BJJ is ineffective for self-defense. Unfortunately, they further that claim through the material I've seen. This is only to say that the presentation is poor, not that the art can't be made effective (it's the artist, not the art, after all)
Or, more materially, what you're saying amounts to discrediting an entire martial art, derived from judo and Japanese jiu-jitsu, because they take care to distinguish their self-defense-oriented GRACIE jiu-jitsu from what they consider sportive BRAZILIAN jiu-jitsu
So Nova Uniao's pure sport-BJJ, with 100% focus on ADCC and IBJJF competition, with 50/50 and inverted guard, is no different than schools where defending punches from the mount and attaining a clinch against a boxer is the primary material for blue belt? Uh...I disagree?
"Arresting the whole body first would require exerted effort to control the torso and legs, making arrest of the wrist simply optional (you could just as easily control the arm, elbow, shoulder)." --> OK, but this doesn't invalidate causing your opponent to submit by locking their wrist.
Example: In am taken down by a superior wrestler, and am able to mitigate the danger of them being on top of me by using full guard. I apply a gooseneck to their wrist, either breaking it or causing them to give up and stop hitting me.