To unlock all extras (except the Topps cheats), insert the code "Black Sox" at the cheat menu.
Daisuke Matzusaka
The Red Sox pitcher Daisuke Matzusaka is in the game, though his name doesn’t appear. He’s known on the Red Sox roster as Dennis Miles (as he opted not to have his name appear in the game). This can be changed if you so desire.
Mickey Mantle codes
Enter these codes in the enter cheats menu
Password - Effect
m4murder - Boosts your ability to hit home runs during the game just like The Mick.
phmantle - Mickey will pinch hit.
Mickey Mantle Codes
At the enter cheats screen enter the following:
Password - Effect
mightymick - Boosts a team's power rating 25% for 1 inning.
triple crown - Boosts the hitting of the 3,4,5 hitters in the lineup 50% for 1 game.
Power Hitting
To increase hitting power, insert "triplecrown" at the cheat code menu. If done correctly, the heart of your lineup (3rd, 4th, and 5th batters) will have increased hitting (50%). This will last for one game only.
Temporary Power Boost
To increase your team’s power for a single inning by 25%, put "mightymick" (minus the quotes) into the cheat code menu.
Unlock Everything
Enter cheat in the enter cheat option. Enter Derek Jeter as a password.
Unlocks Mickey Mantle in free agency
Enter cheat in the enter cheat option. Enter themick as a password.