At the match-up screen, press Square, Triangle, and Circle 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 Square, Triangle(2), Circle(3), Left.

Effect	Code
Alien team	2-3-1 Down
Atlantis stadium	3-2-1 Left
Big heads	2-0-0 Right
Blade bat	0-0-2 Up
Bobble Head team	1-3-3 Down
Bone bat	0-0-1 Up
Casey team	2-3-3 Down
Caveman bat	0-0-1 Right
Coliseum stadium	3-3-3 Up
Dwarf team	1-0-3 Down
Eagle team	2-1-2 Right
Empire stadium	3-2-1 Right
Evil Clown team	2-1-1 Down
Extra time after plays	1-2-3 Up
Extra time to enter codes	3-0-3 Up
Infinite turbo	4-4-4 Down
Forbidden stadium	3-3-3 Left
Dolphin team	1-0-2 Down
Gladiator team	1-1-3 Down
Horse team	2-1-1 Right
Ice bat	0-0-3 Up
Lion team	2-2-0 Right
Little League mode	1-0-1-Down
Log bat	0-0-4 Up
Mace bat	0-0-4 Left
Maximum speed	0-0-3 Left
Maximum power	0-3-0 Left
Maximum batting	3-0-0 Left
Midway Park stadium	3-2-1 Down
Minotaur team	1-1-0 Down
Monument stadium	3-3-3 Down
Napalitano team	2-3-2 Down
No contact	4-3-3 Left
No fatigue	3-4-3 Up
Oshlan team	2-2-2 Down
Pinto team	2-1-0 Right
Rivera team	2-2-2 Up
Rocket Park	3-2-1 Up
Rodeo Clown team	1-3-2 Down
Rubber ball	2-4-2 Up
Scorpion team	1-1-2 Down
Small heads	2-0-0 Left
Softball	2-4-2 Down
Spike bat	0-0-5 Up
Sub-Zero team	1-2-2 Down
Terry Fitzgerald team	3-3-3 Right
Todd McFarlane team	2-2-2 Right
Tournament mode	1-1-1 Down
Wiffle bat	0-0-4 Right

Note: More then one code may be activated per game.