The other day in training I was on bottom with my partner on top in my closed guuard. It was a pretty tight guard and before this he always had a tough time passing my guard. This time, however, he did a pass I was completely unfamiliar with. Basically he stood up, kind of squatted down, and used his knees to drive into my hamstrings and his elbows to drive into my quadriceps. At first it didnt really have any effect on me but eventually my legs cramped and he powered out of my guard and passed it. Is anyone really familiar with this guard pass or know the name of it? Thanks.