Cheat menu 
Enter the options menu and select "Gameplay". Hold D-pad Left + Left
Analog-stick Right and press Start. The "Codes" selection will now be
unlocked at the options menu.


Bonus teams 
Enter "MEGASTARS" as a case-sensitive code to unlock three bonus teams.


Trash in the streets 
Enter "SPRINGER" as a case-sensitive code to see trash in the streets.
Note: This does not work in the gym.