Shoulder Crunch Sumi Gaeshi

A sumi-gaeshi-style sacrifice sweep from Butterfly Guard, popularized by Gordon Ryan (ADCC 2019). Set up with a same-side arm-drag that baits the opponent's arm to post extended on the mat above your head, rather than the standard opposite-side drag. Once the arm is extended, lace your arm through elbow-deep and lock your hands together, trapping the shoulder with your head positioned beside (not under) theirs — the "crunch" grip. Generate a push-back reaction by lifting toward the opposite side, then use the trapped-shoulder grip together with the butterfly hooks to roll the opponent to the target side, landing in top position.