NBA 2K2

Unlock Codes Entry Screen:
In the "Options" menu select "Game Play". Press and hold D-pad Right AND Control Stick Left and press Start. The "Codes" selection will now be available at the "Options" menu.

Unlock NBA 2K2, Sega Sports, and Visual Concepts Teams:
Enter "MEGASTARS" as a case-sensitive code in the "Codes" entry screen.