130 VS 300..........?

ok so i got in to this street fight wit this guy who was like 30 and 300 lb and im like 130 and 17 he got a KO in the first hit and started to stomp on my face when i was out. so im wondering if i go find him do i stand a chanc? cuz i think that crap that hes gunna hit me on the ground while im KO