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.
To increase your team’s power for a single inning by 25%, put “mightymick” (minus the quotes) into the cheat code menu.
To unlock Mickey Mantle in free agency, enter “themick” in the cheat code menu.
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.
To unlock all extras (except the Topps cheats), insert the code “Black Sox” at the cheat menu.