just hold r1 and block it at the right moment and hit em wit a counter upper cut to the grill. i one punched some1 wit mike tyson doing this. he threw haymaker. blocked and then hit him back wit counter haymaker uppercut dude just dropped and didnt get up. or if he throws jabs just do the weave and u duck under it. just keep doing it and u will win cuz counters take like 10 times as much energy off as a normal hit.