ESPN NHL Hockey Cheats (PlayStation 2)

This isn't really a cheat but more of a hint if you want to unlock
  more rewards on a higher difficulty level just go to GENERAL options
  and choose the difficulty you want then go to ADVANCED options and
  turn down the CPU skills and turn up the HUMAN skills

 

On the main menu go into Game Modes, then on main screen enter: R1, R1, L1, LEFT, LEFT,
DOWN, O, R1, O, L1, UP, RIGHT, O, DOWN, LEFT, LEFT, O, R1, DOWN, UP. If entered correctly
the bottom of the screen should have cheats.