Striker Pro 2000 Codes -

Bonus stadiums:
Press Left(2), Up, Circle(2), Triangle at the main menu.

Bird players:
Pause game play, then press Up, Triangle, Left, Square, Right, Circle, X(2) at the cheat screen.

New features:
Pause game play and press Left, Up, Left, Up, Left, Up, Left, X at the cheat screen.