Allstar Baseball 2002 Cheats

Unlock Bonus Teams:
You can unlock two special bonus teams, the Dingers and the Islanders, by going into the Exhibition Mode and tapping R2+L2 at the team selection screen. Once you hear a gong sound, you will then be able to select either team.

If you don't hear the tone at first, tap the buttons until you do.

Unlock Dingers in Batting Practice:
To get the bonus team, the Austin Dingers, in Batting Practice enter that mode and then press R2+R1+L2+L1 at the team selection screen.

Hint: Alternate Uniforms
Press L1 or R1 in Exhibition mode.