Would the boston crab be legal in an mma or ufc fight

Question

Would the boston crab be legal in an mma or ufc fight

Answer 1

 i have to wonder how easy it would be while standing inside guard on a defender on his back? not that hard to do in the right situation and very painful. not to mention the ankle lock to boot. a man on his back throwing upkicks is quite vulnerable to such a move. and i challenge you to find a fighter who trains to fend off that move.