Press Down, Right, Circle, Square, Left, Triangle, Up, L1 at the main menu. The controller will vibrate to confirm correct code entry. It will not show up on your profile, but it does work in Exhibition mode.
All Golden and Silver Era Players
Press L1, L2, Square(2), Triangle, Circle, Down at the main menu. The controller will vibrate to confirm correct code entry. It will not show up on your profile, but it does work in Exhibition mode.
Cheats
Enter at main menu
Code - Effect
Up 7 times - All pitches curveball
O 6 times - Every player becomes all star
left, down, X, right, X, O, up, - Home run bat
up, up, down, down, up, down - Really slow pitches
left, X, O, Left O, X, Down - Rubber ball
Faster Baserunning
This is really more of a tip that you all might know, but I didn't realize it until 2 months after I purchased the game. When playing the game in any mode it says press R1 to advance bases. That is correct but what it really means is to hold the button down. Your player will round the base more smoothly. If you just try to tap in when you are close to the base, your running will be choppy and not as fast.
Infinite Balls
Enter the following code with CodeBreaker PS2 to have no walks:
8BA88005 43D6DB19
C6F2CFF2 2DAE8560
Infinite Outs
Enter the following code with the CodeBreaker PS2 to have infinite outs:
8BA88005 43D6DB19
0E826A95 9AF7209B
Infinite Strikes
Enter the following code with CodeBreaker PS2 to have infinte strikes:
8BA88005 43D6DB19
FE1776DA 0B0400DC
Main Menu Codes
Enter any of the following code at the main menu:
Code - Effect
Left,Right,Up,Left,Right,Up,Right,Down - Unlock classic free agents at the player movement menu
Pause Menu Codes
At any time during a game, press the START button to pause and enter any of the following codes at pause menu:
Code - Effect
Right,Down,Up,Left,Right,Left,Down,Up - Big Head
Right,Right,Down,Up,Down,Up,Down,Left - Fast Running
Down,Left,Down,Up,Right,Left,Right,Down - Max. Speed Pitches
Left,Right,Up,Right,Up,Left,Right,Down - Slow Running
Left,Right,Down,Up,Right,Left,Down,Left - Small Heads