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BJJ position

Half guard

Half guard is the position where the bottom player controls one of the opponent's legs between their own legs. It sits between guard and a passed position, and it can go either way. Played flat on your back, it is a step away from being passed. Played on your side with an underhook or a knee shield, it is one of the best sweeping and back-taking positions in the sport. The top player wants to flatten the bottom player, control the head and free the trapped leg to complete the pass.

Half guard position artwork
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If you're on the bottom

  • Stay on your side and get the underhook on the trapped-leg side
  • Use a knee shield to keep distance when you can't get the underhook
  • Come up to your knees, sweep, or take the back when the opponent reacts

If you're on top

  • Win the underhook battle and flatten the bottom player
  • Control the head with a crossface
  • Free your leg with a knee slice, a backstep or by stepping over to mount

Key details

  • The underhook decides who wins: fight for it before anything else
  • Keep your head higher than the top player's when you are underneath
  • Lock your feet or triangle your legs so the trapped leg can't slide out
  • On top, block the underhook with a whizzer or a shoulder before passing

Common mistakes

  • Lying flat on your back with your head on the mat
  • Holding the leg tightly and doing nothing else
  • On top: driving forward without controlling the near arm, which hands over the underhook

Related positions

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