I mostly play Judo, and I'm pretty advanced, being a black belt. I'm not the best, and one trick that always gets me is when people magically force my elbow to remain bent in a grab trade and force it to the ground despite the joint being set to extend. If someone could explain how that works and how to counter it, that would be nice.

*Note: I am aware of the trick to allow your elbow to extend more easily in a grab trade, which is to contract your wrist, however, when an experienced player uses the elbow bend trick, this does not work, nor does anything else I try.

*Edit: this mostly happens in JudoFrac because in regular Judo, something will usually break.