Cheat mode
Pause game play and press Square(2), Circle(2), L1, R1. A sound will
confirm this portion of the code. Now, press L1 + L2 + R1 + R2. The
"Ball Cannon" (set pitch physics) and "Game State" (edit game
parameters) options will now be unlocked.

Fights
Hold Square after your batter is beaned and he will charge the
pitcher and start a fight. Your player will be ejected.

Note
After using the "Game State" and "Ball Cannon" cheats, if you
do not save soon afterwards, your game may freeze.

Glitch: Getting beaned
Sometimes if your batter is beaned, he will not be allowed to go to
1st base.

PS2 Cheats for High Heat Baseball 2004

High Heat Baseball 2004 cheat codes

High Heat Baseball 2004 cheats