Bite opponent's ear During a match hold L1 + R1 to clinch your opponent and press Triangle + Circle + X + Square.
Head butt Hold R1 + R2 and press Triangle during gameplay.
Signature moves Press Triangle + Circle to do a boxer's signature move.
Double damage Enter *DOUBLEDAMAGE* as a name in career mode.
Elbow Hold R1 + R2 and press Square during gameplay.
Invincibility Enter *INVINCIBLE* as a name in career mode.
Kidney punch Hold R1 + R2 and press Circle during gameplay.
Unlock boxers Enter these codes as your name in career mode.
KNUCKS .... Ashy Knucks SANDERS .... Barry Sanders GIAMBI .... Jason Giambi SEAU .... Junior Seau NOLAN .... Owen Nolan THROB .... Schmacko Throb FRANCIS .... Steve Francis BABY .... The Baby BULLDOG .... The Bulldog CLOWN .... The Clown EYE .... The Cyclops GORE .... The Gorilla
Kick Press Triangle + Circle + X + Square during gameplay.
Low punch Hold R1 + R2 and press X during gameplay.
