The following are known CWCheat Codes for Jikkyou Powerful Pro Yakyuu Portable on Sony Playstation Portable (PSP).

_S ULJM-05077
_G Jikkyou Powerful Pro Yakyuu Portable [JP]
_C0 BOLL SPEED
_L 0x016D702C 0x000000A5
_C0 CONTROL
_L 0x016D702E 0x000000B6
_C0 ERROR KAIHI
_L 0x016D700C 0x0000000F
_C0 GATYA MUGEN
_L 0x216D7B70 0x00000014 
_C0 HIDARI
_L 0x016D7030 0x00000007
_C0 HIDARISHITA
_L 0x016D7031 0x00000007
_C0 Jibun Tensu 99
_L 0x00178413 0x00000063 
_C0 KENRYOKU
_L 0x016D7009 0x0000000F
_C0 MIGI
_L 0x016D7034 0x00000007 
_C0 MIGISHITA
_L 0x016D7033 0x00000007
_C0 MI-TO
_L 0x016D7007 0x00000007
_C0 Power
_L 0x016D7008 0x000000B4
_C0 SHITA
_L 0x016D7032 0x00000007
_C0 SHUBIRYOKU
_L 0x016D700B 0x0000000F
_C0 Slot MUGEN
_L 0x2161F7C0 0x00000000
_L 0x216D7B28 0x00000000
_L 0x216D7B6C 0x00000000
_L 0x216D7B74 0x00000000
_L 0x216D7B78 0x0000000
_C0 Slot MUGEN
_L 0x2161F7C0 0x00000000
_L 0x216D7B28 0x00000000
_L 0x216D7B6C 0x00000000
_L 0x216D7B74 0x00000000
_L 0x216D7B78 0x00000000
_C0 SOURYOKU
_L 0x016D700A 0x0000000F
_C0 STAMINA
_L 0x016D702F 0x0000009D
_C0 Tokushu Nouryoku 1
_L 0x016D704C 0x000000C1 
_L 0x01673624 0x00000014