the ball shot is a quick way to win a fight BUT u would prolly be labled as a ***** due to the embarassing win. A hard punch to the gut will most def make him curl then follow up with a uppercut. If he doesnt fall with the upper just rush him with some punches hell prolly jus ball up an go into defensive position by that time someones gonna break up the fight. Make sure he does the first move tho rather its jus a shove or whatever physical that way u can say self defense an wont be stuck payin his medical bills if u break his nose or somethin an if it went to court an all.