The following are known Action Replay Codes for MLB 2001 on Sony Playstation (PS1).

The codes should work with the region specified but may work for other regions as well.

Device Compatibility: Action Replay, CodeBreaker & GameShark

Infinite Creation Points
801dcc4800c8

1 Ball For Walk
d00b92740000
800b92740003

Never Strike Out
800b92720000

1 Strike For An Out
d00b92720000
800b92720002

1 Out Per Inning
d00b92700000
800b92700002

2 Outs Per Inning
d00b92700000
800b92700001