Duck Under
Type
Technique
description
A duck under is the entry where the passer swims their head and torso underneath the opponent’s leg line to access the far hip and stabilize with a near-side knee wedge. In the connected Cole Abate study, it appears as a timed response to open-guard retention movements (especially high leg pummels/inversion) or as a forced entry after briefly clearing frames/hips. It matters because a clean lane + wedge prevents immediate re-guard and turns a momentary opening into stable passing progress.
entries/setups
– Torreando / outside passing threat → opponent high-pummels to retain → swim underneath into the duck under lane.
– Crazy dog engagement + windshield wiper over a pinned leg → enter as the opponent pummels to recover.
– Stack/pressure (including vs lasso/settled guard) → displace hips → duck under entry appears.
– Underhook vs DLR / knee-shield type frames → clear the frame (elbow-pry / quick redirection) → low-stance duck under.
– Knee cut / shin-slice engagement → opponent pummels to recover guard → immediate duck under.
– 2-on-1 leg drag / shuck attempt → force the lane directly → duck under entry.
position
Top passing vs open guard reactions
key details / teaching points
– Time the lane: enter as the opponent’s leg pummel/inversion opens a brief path underneath.
– Win the far-hip connection early; don’t travel deeper under the legs without that anchor.
– Set and keep the near-side knee wedge to stop immediate re-guard.
– When entering off chain passing, keep the leg pinned while you travel (windshield wiper / legwork).
– Adjust stance height (high / mid / low) to the moment, while keeping lane + wedge priorities.
– If the lane isn’t there, build it: briefly move hips via stack/pressure or redirect frames just long enough to slip under.
common mistakes
– Diving under while the frame/leg position still blocks the head swim (lane not actually open).
– Failing to establish or keep the near-side knee wedge, allowing immediate knee-line recovery.
– Losing control of the pinned leg during side-to-side passing, so the opponent can re-square before you enter.
– Overcommitting when the structure breaks, leading to stalls or exposure to attacks (noted risk: omoplata).
counters & defenses
– Maintain a blocking frame / close the lane long enough to stop the head swim.
– Pummel defensively to the bicep to deny the entry path (noted in a failed-entry example).
– If the attacker loses the wedge, recover the knee line quickly to re-guard.
related studies
