All venues:
Highlight the "My Corner" option at the main menu, then press Left(3), Right(3), 
Left, Right(2). A sound will confirm correct code entry. 

Big head mode:
Highlight the "Fight Now" option at the main menu, then press Left, Right, Left, 
Right, Left, Right, Left. A sound will confirm correct code entry. Select the "Fight 
Now" option to have a big headed boxer. 

Fight as Big Tigger:
To unlock Big Tigger as a boxer, go to the main menu. Select "My Corner", 
then "Record Books", then "Most Wins-Boxer". Tap Up(2) and you will now be able 
to play as Big Tigger as a middleweight fighter. A sound will confirm correct code 
entry. 

Alternate uppercut:
Press Jab + Hook to throw an uppercut without Total Control Punching. 

Recover from knockdown:
Use the Left Analog-stick and Right Analog-stick to merge the images in your view 
until they become one. 

Bolo Punch special punch: Defeat Ray Leonard in career mode. 
Ducking Hook special punch: Defeat Muhammad Ali in career mode. 
Look Ma No Hands special punch: Defeat Roy Jones Jr in career mode. 
Lunging Hook special punch: Defeat Chris Byrd in career mode. 
Lunging Hook special punch: Defeat Evander Holyfield in career mode. 
Sledgehammer special punch: Defeat Sonny Liston in career mode.
The Birdie special punch: Defeat Bernard Hopkins in career mode. 

Small fighter:
Highlight "Play Now" option at the main menu, then press Left(3), Right(3), Left, X. 
A sound will confirm correct code entry. Alternately, press Left, Right, Left, Right, 
Left at the main menu. 

Career mode:
Career mode is only twenty years long. Choose your fights wisely. Also, do not 
Auto Train. You will not have enough years or fights. You will only start to get two 
to three fights per year as your fighter builds his rep.

Rocky Marciano stats:
In career mode, fight Rocky Marciano. In the pre-fight introductions, Big Tigger will 
say that Rocky is 188 pounds. This means that he is not a heavyweight 
(heavyweights are over 190 pounds) At that weight, Rocky would be in the 
cruiserweight class. Then in the "Schedule Fight" option, check Rocky's fight stats. 
It display his weight at 192 pounds.

Taunt:
Press L1 + R1 + L3 + R3 during a fight to taunt your opponent, regardless of 
controller configuration. 

Bangkok Palace venue:
Win a match at Bangkok Palace in career mode. 

The Viceroy venue:
Win a match at The Viceroy in career mode. 

Open All Arenas:
From the "My Corner" menu, enter LEFT, LEFT, LEFT, RIGHT, RIGHT, RIGHT, LEFT, 
RIGHT, RIGHT 

Midget Mode:
From the main menu, enter LEFT, RIGHT, LEFT, RIGHT, LEFT