Super player
Enter "Scott Murray" or any other development team name as a player name at the player creation screen or during spring training.

Force an error
Hit a pop up, and if someone from the other team goes to catch it, hold [R1] + [R2] + [L1] + [L2], and press [Circle], [Triangle], [Square], [X], [Right], [Up], [Left], [Down]. The player will get an error upon catching the ball. Note: This does not work every time, and must be done before the person catches the ball.

Easy hits
When playing the CPU hold [Down] while hitting and press "Power". The batter should get a hit approximately 90% of the time. This is especially useful in spring training mode.

Easy homeruns
Hold "Up/Left" when at bat and keep the buttons held after the ball is hit. This will make the ball fly past the left fielder, however he may catch the ball.

Easy strikeouts
Get a pitcher with a good arm and a sinker. Pitch a sinker to the batter inside and down a little bit, outside the strike-zone. If the right spot is found, keep pitching there to strike the batter out in five pitches.

Charge the catcher
Repeatedly tap [X] when running home and your runner will ram the catcher. At times, this may cause the catcher to drop the ball. Note: Auto Sliding must be enabled.

Hitting accuracy
After the pitcher chooses where to place the pitch, press a direction on the D-Pad to view where the ball travels. Press [Up] if you wish to hit straight in the air or into centerfield, press [Down] for hitting a ground ball. The ball may not go to certain places because of where the ball is pitched (inside, outside, high, or low).

Extra out on play
Throw the ball to a base when fielding. This trick works better at second base. Keep throwing the ball to that base until the player over-throws it into the outfield. At times the game will call another out if the ball is caught.

Baseball Bloopers FMV sequence
Enter the start menu and allow the MLB '99 demo to run. Watch it until one half of the inning is over, and then a special FMV sequence, along with the credits, will appear.

Fights
Intentionally hit a batter, then immediately press [X]x3. The announcer will say "That out to clear the dugout" before the fight begins. Note: A few attempts may be necessary before a fight breaks out.

Bonus audio
Play track two of the game disc in an audio CD player to hear music from the game.