At the match-up screen, press B, Y, and X to change the icons in the first, second, and third boxes respectively. 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 B, Y(2), X(3), Left. Note: More then one code may be activated per game.
 
Result Code
Infinite turbo 4-4-4 Down
Maximum speed 0-0-3 Left
Maximum power 0-3-0 Left
Maximum batting 3-0-0 Left
Rocket Park stadium 3-2-1 Up
Roman Coliseum stadium 3-3-3 Up
Eagle team 2-1-2 Right
Horse team 2-1-1 Right
Lion team 2-2-0 Right
Pinto team 2-1-0 Right
Todd McFarlane team 2-2-2 Right
Terry Fitzgerald team 3-3-3 Right
Extra time after plays 1-2-3 Up
No fatigue 3-4-3 Up
No contact 4-3-3 Left
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
Big heads 2-0-0 Right
Small heads 2-0-0 Left
Tournament mode 1-1-1 Down