Cheat mode:
Press Square, Triangle, and Circle to change the icons in the first, second, and 
third boxes respectively at the match-up screen. The numbers in the following list 
indicate the number of times each button is pressed. After the icons have been 
changed, press the D-pad in the indicated direction to enable the code. For 
example, to enter 1-2-3 Left, press Square, Triangle(2), Circle(3), Left. 

Effect - Code 
Log bat 0-0-4 Up 
Wiffle bat 0-0-4 Right  
Mace bat 0-0-4 Left  
Rubber ball 2-4-2 Up  
Softball 2-4-2 Down  
Maximum speed 0-0-3 Left  
Maximum power 0-3-0 Left  
Maximum batting  3-0-0 Left  
Big heads 2-0-0 Right  
Small heads 2-0-0 Left  
Unlimited turbo 4-4-4 Down  
Extra time after plays 1-2-3 Up  
Tournament mode 1-1-1 Down  
No fatigue 3-4-3 Up  
No contact mode 4-3-3 Left  
Rocket Park stadium 3-2-1 Up  
Roman Coliseum stadium 3-3-3 Up  
Monument stadium 3-3-3 Down  
Pinto Team  2-1-0 Right  
Horse Team 2-1-1 Right  
Lion Team 2-2-0 Right  
Eagle team 2-1-2 Right  
Todd McFarlane team 2-2-2 Right  
Terry Fitzgerald team 3-3-3 Right  

In-game hints:
Press X at the "Press Start" screen to display the high scores. Press X again to 
cycle through various hints about the game. 

More homeruns:
Enable the "Rubber ball" code for a better chance of hitting homeruns. 

Enable the "Maximum batting", "Maximum speed", and "Maximum power" codes to 
get either a big hit or homerun about 70% of the time. 

Less homeruns:
Enable the "Softball" code for less of a chance of hitting homeruns.

Easy ground balls and fly balls: 
Throw a fastball low for a ground out or a fastball high for a fly out. This works 
about 90% of the time.

Change batting position with switch hitter:
When you have a batter that can switch hit, press Triangle and he will move from 
the current side of the batter's box to the opposite side. You can usually tell if a 
batter can switch hit if they have shin guards on both shins.

Secret park:
Hit a homerun at Fenway Park. Note: This works very well with a big hitter like 
Jeremy Giambi of Oakland.
 
 
 
 Game Shark Codez: 
 
 Master Code (Must Be On):
 0E3C7DF2 1853E59E
 EE8D96B6 BCD998AA
 
 Home Team Score 0:
 CEA1CDBE BCA99B83
 
 Home Team Score 20:
 CEA1CDBE BCA99B97
 
 Away Team Score 0:
 CEA1CDBA BCA99B83
 
 Away Team Score 20:
 CEA1CDBA BCA99B97
 
 1 Out Per Inning:
 0EA1CD6E BCA99B83
 CEA1CD6E BCA99B85
 
 2 Outs Per Inning:
 0EA1CD6E BCA99B83
 CEA1CD6E BCA99B84
 
 1 Strike = Out:
 0EA1CD66 BCA99B83
 CEA1CD66 BCA99B85
 
 2 Strikes = Out:
 0EA1CD66 BCA99B83
 CEA1CD66 BCA99B84
 
 1 Ball = Walk:
 0EA1CD62 BCA99B83
 CEA1CD62 BCA99B86
 
 2 Balls = Walk:
 0EA1CD62 BCA99B83
 CEA1CD62 BCA99B85
 
 3 Balls = Walk:
 0EA1CD62 BCA99B83
 CEA1CD62 BCA99B84
 
 Home Team Codez:
 
 Infinite Turbo:
 CEA1EFD8 BCA9DD4B
 
 No Turbo:
 CEA1EFD8 BCA9DB83
 
 1 Out Per Inning:
 0EA1D0FA BCA99B84
 0EA1CD6E BCA99B83
 CEA1CD6E BCA99B85
 
 2 Outs Per Inning:
 0EA1D0FA BCA99B84
 0EA1CD6E BCA99B83
 CEA1CD6E BCA99B84
 
 1 Strike = Out:
 0EA1D0FA BCA99B84
 0EA1CD66 BCA99B83
 CEA1CD66 BCA99B85
 
 2 Strikes = Out:
 0EA1D0FA BCA99B84
 0EA1CD66 BCA99B83
 CEA1CD66 BCA99B84
 
 1 Ball = Walk:
 0EA1D0FA BCA99B84
 0EA1CD62 BCA99B83
 CEA1CD62 BCA99B86
 
 2 Balls = Walk:
 0EA1D0FABCA99B84
 0EA1CD62BCA99B83
 CEA1CD62BCA99B85
 
 3 Balls = Walk:
 0EA1D0FA BCA99B84
 0EA1CD62 BCA99B83
 CEA1CD62 BCA99B84
 
 Press L1 + L2 For Advantage:
 0EA12AF8 BCA99582
 CEA1CDBE BCA99B97
 0EA12AF8 BCA99582
 CEA1CDBA BCA99B83
 
 Away Team Codez:
 
 Infinite Turbo:
 CEA1EFE4 BCA9DD4B
 
 No Turbo:
 CEA1EFE4 BCA9DB83
 
 1 Out Per Inning:
 0EA1D0FA BCA99B83
 0EA1CD6E BCA99B83
 CEA1CD6E BCA99B85
 
 2 Outs Per Inning:
 0EA1D0FA BCA99B83
 0EA1CD6E BCA99B83
 CEA1CD6E BCA99B84
 
 1 Strike = Out:
 0EA1D0FA BCA99B83
 0EA1CD66 BCA99B83
 CEA1CD66 BCA99B85
 
 2 Strikes = Out:
 0EA1D0FA BCA99B83
 0EA1CD66 BCA99B83
 CEA1CD66 BCA99B84
 
 1 Ball = Walk:
 0EA1D0FA BCA99B83
 0EA1CD62 BCA99B83
 CEA1CD62 BCA99B86
 
 2 Balls = Walk:
 0EA1D0FA BCA99B83
 0EA1CD62 BCA99B83
 CEA1CD62 BCA99B85
 
 3 Balls = Walk:
 0EA1D0FA BCA99B83
 0EA1CD62 BCA99B83
 CEA1CD62 BCA99B84
 
 Press R1 + R2 For Advantage:
 0EA12AF8 BCA99082
 CEA1CDBE BCA99B83
 0EA12AF8 BCA99082
 CEA1CDBA BCA99B97