Note: The only reason this is useful is because the game loads fast. Go back into the game, and do the same thing again, looking for better stats. If they start to go down, press Home to return to the PSP's main screen. The game will show your boxer before, and his stats either going down or up. Then choose either balance, power, or speed. To get better stats, every time you must first sign a contract for a fight. Enter 'NEWVIEW' as a first name in Create Champ mode to unlock all venues.
