Ken Griffey Jr.'s Slugfest

Automatic home run:
Wait until you are controlling Ken Griffey Jr. at bat. Press Left(2), Right(3), Left(2). Ken Griffey Jr. will point his bat in the direction where the ball will be hit to confirm correct code entry. Successfully connect on a pitch to automatically hit a home run.

Exploding batter:
Quickly press Right, Left, Down, Right, Left, Up, Right, Left, Down while batting. The batter will reappear with the next pitch.

Press Left, Right, Down, Left, Right, Up, Left, Right, Down or Up, Down, Left, Up, Down, Right, Up, Down, Left while pitching and have the box set. The batter will explode and the other batter will come up to the plate.
Information in this section was contributed by Blazingflames5.

View fireworks:
Select exhibition mode. Then, press Z at the stadium selection screen to enter "View Stadium" mode. Then, press R + Z to shoot fireworks near the home plate section of the stadium.

Flying outfielder:
Wait until a pop fly to the outfield is hit by your opponent. Allow the ball to drop, then pick it up. Hold Z and press C-Up to run into the infield with the ball. Then, press C-Right, C-Up, C-Left, C-Down, C-Left, C-Up, C-Down, C-Right, C-Up, C-Left, C-Down to throw the ball to various bases. The crowd will boo to confirm correct code entry. Intentionally ignore the next ball that is hit into the outfield, and repeatedly tap A or B to fly.

View CPU pitches:
Press R on controller two when your team is at bat.

Big head mode:
Win the World Series under the rookie difficulty setting. Then, create a player with the name CODE BIGGHEDZ. A sound will confirm correct code entry.

CPU vs. CPU mode:
Win the World Series under the all-star difficulty setting. Then, create a player with the name CODE CPUVSCPU. A sound will confirm correct code entry.

Tick team:
Win the World Series under the veteran difficulty setting. Then, create a player with the name CODE THETICK. A sound will confirm correct code entry.

Big feet:
Create a player with the name CODE BIGFOOT or CODE BIGFEET. A sound will confirm correct code entry.

Super players:
Create a player with the name CODE SUPERHUMAN. A sound will confirm correct code entry.

Invisible team:
Create a player with the name CODE INVISIBLEMAN. A sound will confirm correct code entry.

Thin team:
Create a player with the name CODE TOOTHPICK. A sound will confirm correct code entry.

Small team:
Create a player with the name CODE LIDDLELEAGUE. A sound will confirm correct code entry.

Weeble team:
Create a player with the name CODE WEEBLEMAN. A sound will confirm correct code entry.

Flat team:
Create a player with the name CODE STEAMROLLED. A sound will confirm correct code entry.

Big bats:
Create a player with the name CODE PHATTBATT. A sound will confirm correct code entry.

Secret teams:
Create a player with the name CODE EMOTIONS. A sound will confirm correct code entry. 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.
Information in this section was contributed by Brian C.

Change batting mode:
Begin game play in arcade mode with the batting set to arcade mode. While your opponent has a man on base, press Z + A or B to start a pitch. Then, while your pitcher is winding up, press C-Up, C-Left, or C-Right. When the button is released, the pitch will be thrown in classic mode, instead of arcade mode.

Created player names:
Use one of the following names with a created player and it will be announced during the game.
Information in this section was contributed by Levi Sentz.

Arnie Palmer
Bernard Saw
Big Booty
Bill Gates
Carlos Santana
Fred Rogers
Gary Payton
George Bush
Green Yoshii
Henry Aaron
Ichiro Suzuki*
Jennifer Lopez
Jesse Ventura
Joe Jackson
King Kong
Mel Gibson
Michael Jordan
Mike Schmidt
Ozzie Osborne
Pete Rose
Plunk Rocker
Raines Cloude
Reggie Jackson
Richard Nixon
Silver Bell
Snow White
Speedy Gonzales
Strawberry Cone
Tony Blair
Tony Jones
White Yoshii

Hint: Pick off play:
When your team is on defense and a CPU player is on base, intentionally throw a bad pitch, then press C-Down. Your catcher will be able to move. Run at the runner that is leading off the base and tag him out. You can even get double or triple plays with this trick.
Information in this section was contributed by GrannyBob9 and Homerunking987.

Hint: Easy no-hitter:
Walk every player on your opponent's team until the bases are loaded. Then, throw a ball and press C-Down and tag every player. Note: This also works as a shutout and triple play.
Information in this section was contributed by Levi Sentz.

Hint: Restore pitcher's energy:
After a a game in season mode, select "Free Agents", remove your pitcher and select a new one. Immediately remove the new pitcher and choose your original pitcher again from the free agents.

Hint: Hit the roof:
While batting in Homerun Derby mode, bat at the Skydome with Jim Thome. Aim under the ball. If this is done correctly, the ball will hit the roof and fall down onto the field. It will count as a homerun.
Information in this section was contributed by Nick van der Pol.

Hint : Easy special teams:
Hold Analog-stick Down at the game type selection screen the ball is turned on exhibition and press C-Up + C-Down + C-Left + C-Right.
Information in this section was contributed by Boardrunner9.

Glitch: Confused pitcher:
Have the batter bunt the ball to the pitcher. Have the pitcher dive twice at the ball, and get the ball on the second attempt. The pitcher will stand and begin walking in circles.

Glitch: Throw from inside the stands:
Begin game play in any mode except home run derby. Make sure that auto-fielding is off in the options menu. When it is your turn pitch, wait until a ball is hit into the outfield. Get the ball and run either to the stands on the left or right. Throw the ball to the base to which the runner is running to. It will as if you are far in the stands because you get smaller. You can still see yourself while you throw the ball.
Information in this section was contributed by zitiboy.