At the Main Menu enter the following codes:

All bonuses
L1, L2, L3, L3, R1, Circle, Square

All Pitches Have Max Break
Right, Up, Right, Down, Up, Left, Left, Down

All Pitches Have Max Speed
Up, Left, Down, Up, Left, Right, Left, Down

Classic Stadiums
Down, Up, Right, Down, Up, Left, Down, Up

Golden/Sliver Era Players
Left, Up, Right, Down, Down, Left, Up, Down

Randomized Roster
Left, Up, Down, UP, Right, Left, Left, Down