Donut Hole Defense from Half Guard
Defend the kimura by inserting the free arm through the 'donut hole' loop formed by the opponent's grip, using the elbow to separate their hands and flattening them out.
7 steps
· save to drill into each- 1Protect your arm by driving your knee down and holding your thigh tightly3:37
- 2Identify the donut hole formed by the loop of the kimura grip4:03
- 3Shove your free arm through the donut hole, getting your elbow deep on top of his forearm4:09
- 4Find his thumb with your hand and place your elbow there4:32
- 5Pull your elbow towards you like a golf swing, then wing your elbow out to start separating his hands4:37
- 6Start pulling your own elbows apart and wing your hand out4:51
- 7Come around for a half nelson or palm to back grip and flatten him out4:56
From the source video

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Then the round started — and you forgot it.