Rocky Balboa [PSP]

Apollo Creed (Rocky IV):
Win the "Apollo Creed vs. Ivan Dragon" match in Historical Fights mode.

Dave Fossan:
Win the "Rocky Balboa vs. Cluber Lang 1" match in Historical Fights mode.
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Joe Czak:
Win the "Clubber Lang vs. Rocky Balboa 2" match in Historical Fights mode.

Mason "The Line" Dixon:
Win the "Rocky Balboa vs. Mason Dixon" match in Historical Fights mode.

Rocky V:
Win the "Mason Dixon vs. Rocky Balboa" match in Historical Fights mode.

Stay in ring and never fall
You will have to act really dumb and you have to press L1, R2, C, Circle and it should work and you will be a millon air with this cheat code and you will win the game in 1 minute!