Unlock Ghetto Fabulous:
Create a player with the last name GHETTOFAB and he will appear in the free agent pool.

Unlock DJ Clue:
Create a player with the last name MIXTAPES and he will appear in the free agent pool.

Unlock Just Blaze:
Create a player with the last name GOODBEATS and he will appear in the free agent pool.

Play as Busta Rhymes:
Enter the create-a-player screen and enter FLIPMODE as a last name. A message will confirm correct code entry. Busta Rhymes will appear in the free agent pool. Select the "Sign/Release Player" option to get him on your team.

Play as Hot Karl:
Enter the create-a-player screen and enter CALIFORNIA as a last name. A message will confirm correct code entry. Ghetto Fabulous will appear in the free agent pool. Select the "Sign/Release Player" option to get him on your team.

Slower speed:
Change the game type to "Arcade" and select the desired rules for the game. It has a much slower game speed and easier control.