MLB 08: The Show Cheats (PSP)

Enter the following codes at the 'Main' menu to enable the corresponding effect. There is
no visual or audio confirmation so enter the code carefully.

Unlock Classic Free Agents at the Player Movement Menu: Press Left, Right, Up, Left,
Right, Up, Right, Down.

Unlock Sliver and Golden Era Teams: Press Right, Up, Right, Down, Down, Left, Up, Down.

Press the 'Start' button any time during gameplay to bring up the 'Pause' menu  to enter
any of the following codes to unlock the corresponding effect. Enter the codes carefully
as there is no visual or audio confirmation.

Unlock Big Ball: Press Right, Down, Up, Left, Right, Left, Down, Up. 

Unlock Big Head Mode: Press Right, Down, Up, Left, Right, Left, Down, Up. 

Unlock Small Head Mode: Press Left, Right, Down, Up, Right, Left, Down, Left.