Passes
Opening closed guard from the knees with a knee in the tailbone, a hip step back and elbow pressure on the thigh.
Also called kneeling guard opening, knee in the tailbone, guard break from the knees.
4 resources
Matt Arroyo Jiu Jitsu YouTube
Posture first, then opening the guard from the knees or standing: pin the wrist, turn the knee into the hip, keep the leg vertical and slide their leg down it.
Three ways to open a closed guard including a kneeling break with the knee in the tailbone and an unorthodox grip on the bottom foot. Elbows stay tight throughout.
Class footage linking the kneeling guard break straight into a knee slice: knuckles on the chest, hip grip, use the lower back to open, then underhook and slide through.
Chewjitsu short covering three classic ways to break a closed guard.