Easy Homer
While using Ken Griffey at bat press Left, Left, Right, Right, Right, Left, Left. Griffey will point his bat to signal correct entry of this code. Connect with the ball for a easy homer. Reportedly you can press pause before entering this code to make it easier

New Teams
To get Angel Studios and Nintendo Teams at the create player name screen put in code for the first name and liddleleague for the last name

Weeble Team
To get Weeble Teams at the create player name screen put in code for the first name and weebleman for the last name

Another Team
To get Weeble Teams at the create player name screen put in code for the first name and emotions for the last name. The new teams can be used in any mode except for season mode. Alternatively, win the World Series with any team to unlock Team Nintendo or Team Angel Studios.

Thin Team
To get thin Teams at the create player name screen put in code for the first name and toothpick for the last name

Superhuman
When creating a player. Put GO for first name and TEAM for last name!
You will get 10 for everything. Batting,Power,clutch,speed,defense

Big Head Mode
To get Big Head Mode win the World Series (rookie setting) Then at the create player name screen put in code for the first name and bigghedz for the last name

Computer vs Computer Mode
To get Computer Vs Computer Mode win the World Series (All-Star difficulty setting) Then at the create player name screen put in code for the first name and cpuvscpu for the last name

Tick Team
To get Tick Team win the World Series (veteran difficulty setting) Then at the create player name screen put in code for the first name and thetick for the last name

Big Feet
To get Big Feet create a player name with code for the first name and bigfeet for the last name

Flattened Team
To get Flat Team create a player name with code for the first name and steamrolled for the last name

Superhuman Players
To get Super Human Players create a player name with code for the first name and superhuman for the last name

Blow Up Batter
While batting quickly press Right, Left, Down, Right, Left, Up, Right, Left, Down.

Bigfeet
Put in code for the first name and for the second name put in bigfoot.

Fat Bat
To get a fat bat enter first name CODE , and last name PHATTBATT.

Fireworks
In exhibition mode press Z at the stadium select screen to go to view stadium mode. Now press R + Z to get fireworks

Take man off base
When opp. team is on base, throw a ball or strike, have catcher throw to base, Hit A wait a split second then hit A 3x fast, wait a split second then hit A again. Works best when he is on first base.

View CPU pitches
Press R on controller two when your team is up to bat.

Glitch
While playing a game in any mode, press R+Z+L+down on the joystick+START. Once you do that, when you are fielding it will make your player that you are run in any direction without you controlling him. When you are pitching it will make the stikezone go up half way and when batting it will do the same as the pitching one does. Repeat the code to clear it.

Remove Runners
When playing the computer and a man is on any base throw a pitch that you know the computer won't hit. Then, before the ball is given back to the pitcher, press down C. You should now control the catcher, who has the ball. If you use the control stick and do not use Z and the base to run towards the runner the baserunner should not go back to the base. Even if the bases are loaded you can run around and tag all three runners out.

Get New Players
Go to the create players screen then type in code for the first name. For the last name type in Rookie