Knee on Belly: Biomechanical White Belt Guide

1. From a successful guard pass (e.g., knee-slice-pass), establish a perpendicular hip angle to your opponent's torso.
2. Place your dominant leg's knee on the mat, directly over their solar plexus or upper abdomen.
3. Your dominant foot should be flexed and flat on the mat, directly beside your knee, creating a stable base.
4. Your non-dominant leg should be extended backward, with your toes on the mat for balance and base extension.
5. Drive your hips forward and down, creating forward pressure through your knee and shin into their torso.
6. Your chest should be close to their chest, maintaining upper body connection and control.
7. Grip their collar with your non-dominant hand, pulling them slightly towards you to prevent them from creating space.

• Placing your knee directly on the opponent's hip bone or thigh: This can cause direct pressure on the iliac crest or femoral nerve, leading to sharp pain or nerve impingement. Always aim for the softer abdominal area.
• Allowing your knee to drift too far forward, beyond their shoulders: This compromises your base and allows them to easily roll or shrimp away. Keep your knee aligned with their torso's midline.
• Hanging your weight on your knee instead of driving your hips forward: This puts excessive pressure on your own knee joint, risking hyperextension or meniscus damage. Actively drive your hips forward to pin their chest.

1. Solo drilling: Practice transitioning into Knee on Belly from a simulated guard pass, focusing on exact knee and foot placement. (50 reps, 0% resistance)
2. Partner drilling (no resistance): Your partner lies flat on their back. You practice entering Knee on Belly and holding the position. (20 reps, 0% resistance)
3. Partner drilling (light resistance): Your partner offers minimal resistance, allowing you to focus on maintaining base and pressure. (15 reps, 25% resistance)
4. Partner drilling (controlled movement): Your partner attempts to escape slowly while you maintain Knee on Belly and readjust your base. (10 reps, 50% resistance)
5. Live drilling (positional sparring): Focus solely on maintaining Knee on Belly for a set time (e.g., 30 seconds) against a resisting opponent. (5 rounds, 75% resistance)
6. Live rolling (incorporation): Integrate Knee on Belly into your rolling, attempting to achieve and maintain it as a transition or attacking platform. (5 minutes, 90% resistance)

• WHEN TO ATTEMPT:
• Immediately after successfully passing the opponent's guard.
• When the opponent is trying to shrimp or bridge from side control and you can shift your base.
• As a transition to other dominant positions like mount or s-mount.
• PRIMARY COUNTERS:
• Hip Bump Sweep: If the opponent allows you to establish a wide base, they can bridge into your weight, lifting you and sweeping. This requires the opponent to create a strong upward force with their hips.
• Elbow Escape/Shrimp: If you do not maintain sufficient forward pressure and connection, the opponent can place their elbow on the mat and shrimp their hips away, creating space to recover guard.
• Roll Escape: A common counter where the opponent uses their legs and hips to roll you over, often initiated when your weight is not securely anchored or your hips are too far forward.

Watch step-by-step breakdowns from black belt instructors: