3 Part Technique - Prevent your opponent from connecting his hand as he attempts to pass your half guard with Over Under Control, and frame off of his face to hip escape away. If he persists with his underhook after you've made some distance, chop your leg over his shoulder and sit up to finish him with the Omoplata. If he begins closing the gap before you can drop the Omoplata, knock him off to the side, making room for a strong underhook. If you can catch his far arm from posting, Hook Sweep him from Half Guard; if you miss it, lock up Underhook & Head Control and Bridge Sweep him over the other way.