When you go to the tournament, choose Great Sayiaman (unlock him by becoming champ in Advanced mode). When the match starts make your opponent get close to the edge and then, use Justice Punch. If he guards against it then your in trouble! Here's another one. Get your opponent close to the edge and use Justice Kick (P 2, K 2) by the way Justice Punch is P 4. If he guards then, your in less trouble than when you used Justice Punch.