The stack pass is a high-pressure guard pass used after opening the closed guard, where the passer drives the opponent's knees toward their chest, immobilizing their hips and clearing the legs to secure side control. It is a fundamental pass that leverages gravity and bodyweight, making it effective against flexible guards and in gi or no-gi scenarios.
5 rounds × 3 minutes; partner provides 50% resistance (active frames and pummeling); goal: 4 clean passes per round without losing double underhooks or being swept/submitted.