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.
Midget Mode
From the main menu, enter LEFT, RIGHT, LEFT, RIGHT, LEFT.
Ring Girls and Trucks
To unlock extras such as ring girls, bonus trucks, special punches, new entrance music, and more, simply copmlete in the Career mode and win fights.
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.
One hit knockout
To knock your opponent to the canvas with one punch is to give them 2 straight rights, (straight right-triangle) then press R2 to hit them with your power shot, this will knock them out for the count!