Professor Lucas Lepri demonstrates a sequence from a standing guard pull to a lasso guard and an armbar. The technique involves taking a collar grip while standing, which helps control the opponent's balance when pulling guard. Once on the ground, a deep lasso hook is established by squaring up and keeping the elbow pointed out. This setup allows for Lucas to sweep the opponent over transitioning to an armbar, which is finished by securing the opponent's wrist with the thumb pointing up.