Half Guard BJJ: White Belt Biomechanical Guide

1. From a bottom position, establish a closed guard structure.
2. As the opponent passes one leg, secure an underhook on their far arm.
3. Simultaneously, secure a 'knee-shield' by placing your near leg's knee against the opponent's hip, foot pointing towards their head.
4. Your far leg should wrap around the opponent's far hip, creating a frame.
5. Maintain a strong underhook with your arm, preventing them from posturing up.
6. Drive your hips into the opponent's hip with your knee shield, creating space and angling your body.
7. Use your underhook to pull them into your knee shield, disrupting their balance and base.

• Letting your opponent's knee pass your head: This can lead to a straight ankle lock or knee bar as your leg is exposed and vulnerable.
• Overextending your knee shield: Pushing your knee too far forward can hyperextend your knee joint, risking ligament tears (ACL/MCL).
• Failing to secure an underhook: Without an underhook, the opponent can easily flatten you out and pass your guard, negating any control.

1. Solo drill: Practice entering Half Guard from a flat back position, focusing on the underhook and knee shield placement. (50 reps)
2. Partner drill (0% resistance): Opponent remains still, you practice entering Half Guard and establishing grips. (20 reps per side)
3. Partner drill (25% resistance): Opponent offers slight resistance to your entry, focusing on maintaining grips. (20 reps per side)
4. Partner drill (50% resistance): Opponent attempts a basic guard pass, you focus on maintaining Half Guard and preventing the pass. (10 reps per side)
5. Partner drill (75% resistance): Opponent actively attempts to pass, you work to maintain Half Guard and transition to a sweep or escape. (5 reps per side)
6. Live rolling (90-100% resistance): Implement Half Guard defensively and offensively during rolling. (3 x 5-minute rounds)

• WHEN TO ATTEMPT:
• When an opponent attempts to pass your closed guard and gets one of your legs trapped.
• When you are on your back and the opponent is on top, but has not yet established a dominant passing position.
• When you are looking to transition from a less secure guard to a more controlled position.
• PRIMARY COUNTERS:
• Guard Pass Prevention: Maintain a strong knee shield against the opponent's hip, preventing them from flattening you out. Use your underhook to pull them into your shield.
• Sweep to Guard Recovery: Drive your hips forward, using your underhook and knee shield to create an angle and sweep the opponent, returning to a closed guard or establishing a better position.
• Transition to Deep Half Guard: If the opponent is heavily pressuring, you can transition to deep half guard by sliding your knee shield further up and securing their leg.

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