To use the super punch you must first make sure the glove in the upper corner is flashing then you must press A, B, and R(power button), at the same time and in what direction you want.

While in a fight move away from opponent and press and the z button over and over. You will gradually gain health. You can also get health by holding the z button and rotating the joystick.

In career mode, go to Muhammud Ali and select him. Then, after every match go to training and keep pressing c-up next to the trainer. You will get 30 hits quickly!

To maka your boxer big press: Up-c, Down-c, Up-c, Up-c then your player will be a bit taller than usual (not to much bigger but you should be able to tell)

Pause the game and enter this code: Up-C, Down-C, Up-C (x2), Down-C. A bell confirms correct entry. (Note: To deactivate cheats, re-enter.)

Pause the game and enter this code: Left-C, Right-C, Left-C (x2), Right-C. A bell confirms correct entry. (Note: To deactivate cheats, re-enter.)