After getting hit with the ball, hold down square. Warning: it usually always ejects and hurts your person
Pause the game and press Square, Square, Circle, Circle, L1, R1. A sound indicates correct code entry. Now press L1 + L2 + R1 + R2
Begin a game and then access the in game pause menu.
From here press: Squarex2, Circlex2, L1, R1.
If you entered this correctly, you will hear the announcer chuckle.
Now press L1+L2+R1+R2 to bring up the Debug menu allowing you to tweak every aspect of the game.
Pause the game and press Square, Square, O, O, L1, R1. Then press R1 + L1 + R2 + L2.
While pitching, select your pitch. When you decide on throwing a ball or strike, hold R1 and press X. This will cause you to bean the batter. Be careful, as you can be ejected if you do this too often!
Pause the game and press:
square, square, circle, circle, L1, R1, and then simultaneously press and hold L1, R1, L2, and R2. If done correctly, a sub-menu will appear.