This is an old but lovely match from back in the day, rin nakai with a large weight advantage vs felicia Oh who's a Blackbelt in BJJ, Rin shows how effective her bridge and wrestling pressure is vs someone who is in BJJ terms more experienced. Also my knees hurt just watching it!
She turned into the heel hook and sat in on it.... like it was normal for her knee to bend that way. Apparently it is!
She now fights with sakaraba style double knee tape on, so maybe they did bend that way, until they didn't! I'd quite like to watch her fight with Tate.