All Working Ken Griffey Jr.'s Slugfest Cheats - Nintendo 64

Automatic home run
Wait until you are controlling Ken Griffey Jr. at bat. Press [Left]x2, [Right]x3, [Left]x2. 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.

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.

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.

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.

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

Weeble team
Create a player with the name "CODE" "WEEBLEMAN". 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.

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.

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.

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.

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.

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.