Here's how to play Sumo Santa in the Special Edition: At the character selection screen press: A, C-right, A, C-right, C- down, C-up then at the ? box press right shift to scroll to him.
Play as High Five

    At the character select screen, press and hold the L button while inputing the following code: C-up, C-down, C-left, C-right, B, A If done correctly, you will hear a beep. Now move the cursor over one of the question marks in the lower corners and press the R button. High Five appears! It's Dr. Kiln's right
hand that was removed from his evil body! This character is powerful.
Play as Boogerman

    On the character select screen, hold Z or L and Press B, B, C-right, C-right, C-left, C-right, then press R on the "?" box to play Boogerman.
Play as Earthworm Jim

    Hold Z or L and press B, C-left , C-up , C-right , C-down , C-up. You will now hear a sound. Then press R on the "?" box.

    Go to an Exhibition game and pick your teams. When picking the stadium you want to play in, press all four C-Buttons many times. You will hear a chime if you've done it correctly. Then press The Z-Button to view the stadium. Instead of showing the stadium, you will get to see the ending of the game, just as if you have just won the world series.
Secret Teams

    Highlight 'Exhibition' on the first baseball (menu) that pops up. Now simultaneously press allfour C buttons. Do this many times and you will hear a beep.Then go to the All-Star teams and there will be two new teams: Nintendo and Angel Studios.
Shoot fireworks in View Stadium

    When you get into the "View Stadium" mode by pressing the Z button while choosing your stadium, you can shoot fire works by pressing the Z and R button at the same time. The fireworks shoot near home plate. This code works in every stadium.

    No, there is no Michael Jordan code -- but for those of you who are sick of that stupid roster player on the Bulls, here is how to create your very own Michael Jordan. Go to create player Enter his name and everythingelse is as follows:
First: Michael
Last: Jordan
Age: 35
Years pro: 13
Jersey Number: 23
Height: 6'6
Weight: 215
Position: Guard
Head: 7
And put his abilities all the way up. And you got yourself a Michael.
Disco Court

    Start a game, then press pause (Start) and enter the following button combination: A, C-Up, Control Pad Down, Control Pad Up, C-Down, R, R, B, C-Right, C-Right, Z. Ready for a funky surprise?
Hidden Teams

    While holding L button, select Pre-Season game with A button. Now, scroll all the way to the right. Three new teams will be playable: Nintendo, N64, and Left Field.