Box as a Bear
     At the Main Menu, press Right + Square, Right + Triangle, Right +
Circle, Right + X. Then select any boxer.

Big Head Mode
     At  the  Main  Menu, press Left + Circle, Left + Triangle, Left +
Square, Left + X.

Regain Energy
     Between  fights,  when  given  a choice to hit the heavy or speed
bag, hold L1 + L2 + R1 + R2.

Taunt Opponent
     Press R1 + R2 + X during a match.

Easy Victory
     Knock  your  opponent  down  in  Career Mode while simultaneously
pressing  Start.  Choose to lose the fight and if timed correctly, the
loss will be placed on your opponent.

MegaBoxer
     In  Career  Mode, create a boxer with the name psirules. Exit out
to  the  Main  menu,  then  load  the  boxer.  He  will  have  100% of
everything, 7'5'' and 250 pounds.