Cheat Codes
Enter the following codes at the Cheat menu:

In-Game Cheat Codes
During a game, enter one of the following:

More Pitch Selections
When you are starting a game, go to the "Game Options" screen and go to game mode and change it to arcade. Then go into the game and hold the Z button when you're pitching. You now have eight pitches to choose from, including the spit-fastball and the screwball.

Victory Dance
After the opposing team scores, walk your player to home plate. The man who just scored will be doing the YMCA or the Macarana.

Lizard Players
Choose an exhibition game then go to Kaufmann Stadium. There are two signs that say "Win a lizard." If a player hits that sign the team will turn into lizards.

Little Home Run Derby Guy
Make sure you have a roster slot open on a team. It should say "empty" instead of a player's name. Go to Home Run Derby and pick that guy. You won't even see him him walking in the grass because he's really small and dark. It takes a while for him to reach the mound, so be patient. Watch the pitcher; he'll actually have to throw to the ground so this guy can hit the ball. He does pretty good and is hilarious to watch.
submitted by Jeremy Engleheart

Extra Running Speed
When running to a base, quickly tap the Z button to speed up your player. You can also add some zip to your runner when running back to a base, just tap R quickly.

Hidden Messages
At the title screen enter: C-Up, R, B, B.

Credits
Enter the following code at the title screen to enable a credits option: R, A, Z, R, C-Right, A, B.

Backwards Batters
Pause during a game and go to the change lineup option. Replace your batter with a different batter that bats the same way. Now go back to the game only long enough just to see your batter. Go to the change line-up option again and replace your batter with a batter that bats using the opposite side. (so if the originally batter is right handed, pick a left handed batter). When you go back to the game, you will find the batter is backwards.

Tips

Cheats