As a southpaw or against one I came upon this video on youtube and was always taught how to dominate the foot outside position but this is a tactic if your foot is on the inside for whatever reason. However im not sure how effectice this is or would be (not saying guy is wrong) just saying I dont recall seeing this and if there was a fighter that ever did this can you please post a link?

video


whats your thoughts? would it work? anything to add to note on if I try it in sparring?