Pro Action Replay Codes:
0 Strikes - 00C40F:00
0 Balls - 00C411:00

Game Genie Codes:
No strikeouts - 003-91C-19A -Galoob
4 strikes and you're out - 043-93C-E66 -Galoob
6 strikes and you're out - 063-93C-E66 -Galoob
1 ball and you walk - 003-56C-19A -Galoob