Secret Players
Type in the names of the producers and programmers found in the back of
the instruction manual in the "Create Players" option. Make sure to
press START at the last letter of each name to make the code work.

Cheat Menu

at the game setup menu press L1,X,X,L1,X,Square,R1,X,Square,R1,circle.That should of taken you to credits screen,at that screen Hold Up/Right+triangle+Square for about five seconds.get out of that menu back to the game setup menu, and setup a game and at the "I love this Stuff" screen hold L1+R1+Up/Right+Triangle+X+Square+Circle till the game starts. If you did it right yoiu should of gotten a cheat menu before the game

Change player height:
at cheat menu press L1 and L2 to adjust the height.

Outdoor court:
press Start and Select to change the outdoor courts at the cheat menu

Chameleon mode:
at the cheat menu press Up and Down to change Chameleon mode on or off