Automatic home run: 
Wait until you are controlling Ken Griffey Jr. at 
bat. Press Left, Left, Right, Right, Left, Left.  
Ken Griffey Jr. will point his bat in the direction
where the ball will be hit. Connect on a pitch to 
automatically hit a home run. 

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

View fireworks: 
Select exhibition mode. Then, press Z at the 
stadium select 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. 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 pad two when your team is at bat. 

Big head mode: 
Win the World Series on rookie difficulty. Then,
make a player with the name CODE BIGGHEDZ. 

CPU vs. CPU mode: 
Win the World Series on all-star difficulty. 
Then, make a player with the name CODE CPUVSCPU. 

Tick team: 
Win the World Series on veteran difficulty. 
Then, make a player with the name CODE THETICK.