I am a closed guard player though not by choice. For some reason my legs can stay locked together most of the time, no matter what the other guy tries to do. This helps a lot when I keep the opponent close to me and go for armbars/triangles/omoplatas etc. I know Roger Gracie is the best in the world with the closed guard and I watch him as much as possible, but I was wondering what are some good instructionals with good submissions and to a lesser extent sweeps from the closed guard? Thanks for any recommendations.