Leg locks are the most sneaky and dangerous submissions. Although created for fight sports, a good leg lock can cause terrible damage, also in the street, especially with shoes on. Do I recommend leg locks in a street fight? No. At least not as a first goal. Simply because grappling in the street is wrong. The first goal should be do distroy your enemy with effective striking. Would I break someone's ankle if I had chance in a fight? Absolutely. If I was forced to go to the ground and on my way up I see it, say goodbye to your ankle, or knee. Train smart, stay safe Sharir R, ICCS head instructor.