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Playstation 2 - High Heat Major League Baseball 2002 cheats

Fighting
Hold R1 + L1 + R2 + L2 after your batter is beaned.
Continue to hold these buttons, but hold X also, to will 
charge the pitcher and start a fight. 

Hit a Grand Slam every time:
Create a new player and give the following name for him: SLUGGER.
When he is at bat with the bases loaded, he will hit a grand slam.