Pause game play and press Square2, Circle2, L1, R1. A sound will confirm this portion of the code. Then, press L1 L2 R1 R2. The "Ball Cannon" set pitch physics and "Game State" edit game parameters options will now be unlocked
This will turn on Ball Cannon, which allows you to control the speed and direction of pitches, and Game State, which allows you to set up games as you wish.
Hold Square after your batter is beaned and he will charge the pitcher and start a fight. Your player will be ejected.