Double Speed: At main menu HOLD R1 and press Down, Left, Down, Up, Right, L1.
Unlock all boxers, venues and the Rocky statue: At main menu HOLD R1 and press Right, Right, Right, Left, Right, L1.
Unlock everything: At main menu HOLD R1 and press Up, Down, Down, Left, Left, L1.
Double Punch power: At main menu HOLD R1 and press Right, Down, Left, Up, Left, L1.
Max your stats in movie mode: At main menu HOLD R1 and press Right, Down, Down, Up, Left, L1.
Max Stats for Tourney & Exhibition Modes: At main menu HOLD R1 and press Left, Up, Up, Down, Right, L1.
Win fight instantly: At main menu HOLD R1 and press Right, Right, Left, Left, Up, L1. Then during the fight press L2 + R2 to win fight.