Here's something for defense:
Half throw off the same side the leg grab is on. The key is rotation off their forward momentum.
1st replay is classic half throw counter
2nd replay is an unorthodox counter, using more momentum than force.
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I'll also attach a perfect replay for the overturn single.

Aquita Moderated Message:

Yes I will use this overturn single replay in the tutorial. I'm leaving this here as a bookmark. GJ!