Half guard (from front headlock escape)

Source: Volume 02, §2 --- ▶Watch at 00:03:52   (full transcript)

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What it is

You have escaped front headlock. Your back is on (or near) the floor. You have one of your partner's legs captured between yours --- your bottom knee wedged in front of their knee, your top leg hooked over. Your inside arm is framing across their hips. Your partner may still have head-and-arm connection, but the position has fundamentally changed: you now have a meaningful connection to your partner, and that connection is what lets you go on offense.

This is the pivot point of the entire Volume 02 system. Everything before this position is defense; everything after is offense.

Key structural details

From the transcript: "Part of the problem in front headlock is that your partner has a good, dominant connection to you, but you have very little connection to them. In jiu-jitsu, whenever you can get a better connection to your partner, it's going to be easier to offset their balance and become proactive."

The critical fork is what your partner does with their hands once you reach half guard:

• Hands stay locked --- they are doubling down on the front headlock grip. Their arms are trapped by their own connection. This opens the knee lever.
• Hands unlock --- they are giving up front headlock. You now have the underhook, and the Trilemma system fires: scoop sweep, back take, or knee-slide takedown.

Your frame must stay tight. Elbow bent, forearm across the hips. Extending pushes everything out and opens strangles on either side.

Principles that apply here

• Inside position --- your underhook and inside-leg wedge give you the structural advantage. Losing inside position here means losing the offensive opportunity.

Moves I know from here (outgoing)

• Knee lever --- when partner's hands stay locked. Clamp elbow to rib, trap outside arm and outside leg, put your back on the floor to tilt them over.
• Scoop sweep --- Trilemma prong 1. Partner keeps the whizzer in. Scoop arm through below the hamstring, walk hips underneath, roll partner forward.
• Half-guard back take --- Trilemma prong 2. Partner posts their hand instead of keeping the whizzer. Cut elbow back, turn to two knees, pop head out, chest on partner's back.
• Knee-slide takedown --- Trilemma prong 3. Partner puts the whizzer back on after the tilt attempt. Come up to two knees, hand low, scissor legs, sweep knee to torque partner down.

How I end up here (incoming)

• Sit-through to half guard --- the foundational escape from front headlock. Walk to the leg side, frame, wedge, step over, capture the leg.

Source references

• Volume 02, §2 --- ▶Watch at 00:03:52