Glossary /// Alias
Neck crank guard break defence
Also known as Can Opener Escape — the canonical term used on this site.
Descriptive — a crank used to force the guard open
Neck crank guard break defence is the descriptive name for can opener defence, naming the attack by its actual purpose: forcing a closed guard open by cranking the neck.
Etymology. The label states the intent rather than the shape. Most can openers are not submission attempts at all — they are guard-break pressure, which is why the defensive answer is counterintuitive to anyone treating it as a finish.
Mechanics. The anchor is the defender’s own locked ankles, so the crank works against a structure the defender is actively maintaining. Opening the guard removes the anchor and costs nothing but the position — and opening deliberately, into a guard you chose, is a far better outcome than having it forced.
Cross-reference. “Cervical flexion crank escape” is the anatomical name. Full escape coverage on Can Opener Escape.