Yoko-shiho-gatame escape by trap, bridge and roll
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Escapes (getting out from underneath)

Three actions in one movement, and the syllabuses name all three: trap an arm so they cannot post, bridge to lift their weight, and roll in the direction the bridge sends them.

Key points
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- Trap, then bridge, then roll: in that order, without pausing
- Bridge onto the shoulder nearest them, not straight up
- Keep your elbows tight to your ribs throughout

Step by step
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1. You are held in Yoko-shiho-gatame, their chest across yours at right angles and both of their arms passing around you.
2. Bring both of your elbows in tight against your own ribs to stop them getting deeper.
3. Trap their near arm against your body with your near hand so they cannot post it on the mat.
4. Plant your feet flat and close, then bridge sharply, driving your hips up and towards their head.
5. As their weight lifts, turn hard into them, rolling in the same direction as the bridge.
6. Come out on top, on your knees or in your guard, and release the trapped arm once you are clear.

From the other side
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A tight bridge from underneath is felt before it is complete. Sprawl your legs wider, drop your hips onto the mat, and get your near hand free and posted: a hold with a low centre and a wide base survives the bridge.

VI judo notes
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The order matters more than speed. Feel their arm against your side and clamp it, feel both of your feet flat on the mat, then bridge. If any one of those is missing the roll will not come, and you will know without needing to see it.

The techniques involved
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- yoko-shiho-gatame

From Waza Book: https://wazabook.com/skills/yoko-shiho-gatame-escape-trap-bridge-roll/