Knockout Kings 2000 (PlayStation)

GameShark, Pro Action Replay, Xploder, and Xplorer Codes

Note:
A GameShark or Pro Action Replay cartridge is required to use the codes featured below.

North American (NTSC) version

Unlimited creation points:
800C5698 0064

Unlimited health player 1:
8001DABC 082B
8001DABE 0277
8001DAC6 1420

Unlimited health player 2:
8001DABC 082B
8001DABE 0277
8001DAC6 1020

Unlimited stamina player 1:
8002184C 1000
8002184E 3221
80021852 1020

Unlimited stamina player 2:
8002184C 1000
8002184E 3221
80021852 1420
All codes above from Ted Smithers.

Official codes from InterAct.
Codes from The Game Shark Code Creator's Club.