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.
Enter the code MEGASTARS to unlock the Sega Sports, Visual Concepts, and Team 2K2.
Easily Get to Playoffs:
You want to beat the other team by a landslide and make it to the playoffs easly. After you setup everything in the season, go 2 NBA Rules and turn everything off. Then go and start playen yor first game. When the other team has the ball, then intentionlly pull a foul on them. It wont affect you cuz you have everything off. Keep doing this when they have the ball. I Got 2 112 - 2 with my team being the 76ers.
Thanks to Revolution readers Aamir Malik, The Game Master, PJ and yemane!