Skip to main content

Knee on Belly

Quick Introduction​

Knee on belly is a high-pressure transitional position where you place your knee on the opponent's torso while maintaining a wide base. It scores 2 points in sport BJJ, creates extreme discomfort, and serves as an excellent platform for forcing reactions, setting up submissions, and transitioning to more dominant positions.

Position Overview​

From: Side Control, guard passes, scrambles | Leads to: Front Mount, Back Mount, Armbar, collar chokes | Points: 2 additional (total 5 with pass in IBJJF)

Standard Knee on Belly​

  1. From side control, step near leg over opponent's belly
  2. Plant knee/shin on belly or lower sternum (knee points toward their face)
  3. Far leg posted wide behind for stable tripod base
  4. Near hand controls collar at neck or establishes high grip
  5. Far hand controls belt/pants at far hip
  6. Lean body weight forward through knee (~70/30 between knee and far leg)
  7. Stay on balls of feet, ready to move in any direction
  8. React immediately to any escape attempt with transitions

Key detail: Drive pressure through knee — don't just rest on top. Wide tripod stance essential. High collar grip controls posture; hip grip prevents shrimping. This is transitional, not terminal — force reactions and capitalize.

Knee on Sternum (Submission Setup)​

  1. From standard position, step knee higher toward chest
  2. Place knee/shin across lower sternum (not ribs — avoid injury)
  3. Maintain wide base with far leg
  4. Near hand establishes deep collar grip
  5. Pressure drives through knee into chest

Key detail: Better angle for collar chokes and arm isolation. Controls breathing more directly. Harder for opponent to frame against.

Reverse Knee on Belly (Transitional)​

  1. Occurs when opponent turns away from standard position
  2. Step over with near leg, placing knee on belly while facing their legs
  3. Control far hip with near hand
  4. Prepare for back take as opponent continues turning

Key detail: Natural back take setup. As they turn: establish seatbelt → insert near hook → complete back take.

Submissions from Knee on Belly​

  • Collar chokes — Cross collar, baseball bat choke when they turn
  • Armbars — Step-over armbar when opponent frames; spinning armbar when they push knee
  • Kimura/Americana — When opponent reaches to defend
  • Transitions — Opponent pulls knee → swing to mount; opponent turns away → take back

Core Principles​

  1. Pressure + mobility — Uncomfortable pressure while staying mobile enough to transition
  2. Wide base essential — Far leg posted far back creates stable tripod
  3. Transitional mindset — Not a final position; force reactions and capitalize
  4. Constant threat — Opponent must defend pressure, submissions, AND transitions simultaneously
  5. Follow the reaction — Opponent's defensive movements show your next opportunity

Common Mistakes​

MistakeFix
Standing too uprightStay low over opponent; lean forward through knee
Narrow basePost far leg much further back for stable tripod
Static pressureAttack or transition constantly; don't stay still
Wrong knee placementTarget belly/lower sternum — too high risks ribs, too low easy to escape
Poor grip controlMaintain at least one strong grip; free hands without grips = easy escape
Over-committing weightBalance pressure with readiness to move

Next Steps​

  1. Side Control - Return when position becomes unstable
  2. Front Mount - Natural advancement
  3. Back Mount - When opponent turns away