Those who enjoy using the gi to tie their opponents in knots tend to appreciate the usefulness of the worm guard, and more and more gi specialists are using the position to gain access to some seriously sneaky submissions.
If you’ve been experimenting with this guard yourself (or have long ago made yourself a bit of an expert with it), check out this technique from Vinicius Silva that demonstrates how to work your way towards a surprising choke from the worm guard. This submission is so crafty, your opponent won’t know what’s going on until it’s far too late!
