Hit Home Runs:

First hold L1 + L2 + R1 + R2 and press Triangle, Square, Triangle, Circle, X, Square, Left, Right. If you completed the code correctly you will hear the sound of a thump.

Strike out the Batter:

First hold L1 + L2 + R1 + R2 and press Up, Down, Triangle, Square, Triangle, Circle, X, Square.