Disable all Cheats:
In World Mode change your Players name to NORMAL.

Frank Zamboni:
Win the showcase mode as Mike Tyson.

Jimmy Silk:
Win the showcase mode as Rhy Yung.

Mick Oshea:
Win the showcase mode as Christian Mutamba.

Patrice Demanger:
Win the showcase mode as Rab McCabe.

Small Heads:
Select from the Main Menu the World option and start a new carrer. Enter
"BINGY" as a players name. Press now Triangle.

Big Heads:
Select from the Main Menu the World option and start a new carrer. Enter
"BONGY" as a players name. Press now Triangle.

Jimmy Flex and Disco Stadium:
In World Mode change your Players name to CLUBFUD.

John L. Sullivan and Docks Stadium:
In World Mode change your Players name to OLD MAN.

Invisible boxer:
In World Mode change your Players name to GONE.

Expanding heads:
In World Mode change your Players name to OUCH.

Spinning heads:
In World Mode change your Players name to HURTS.

Stretching necks:
In World Mode change your Players name to NECK.

Big hands and feet:
In World Mode change your Players name to STUPID.