ok, in my BJJ understanding, wrist locks are not common (at least aikido style or chin na style). However, I just got a dvd set with Rodrigo Mederios and he shows a few and another set showed 2 or 3 of them (Rinaldo Santos?). If I remember right, didn't Garcia beat Pe De Pano using one? Are they uncommon but still an integrel part of your game? Who here uses them with success?