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 case-sensitive code MEGASTARS to unlock the Sega Sports, Visual Concepts, and Team 2K2 in exhibition and street modes.
Muhammad Ali and Michael Jackson:
During an exhibition game, press Start and hold L. Go onto the Sixers and they should be on the starting lineup.
At the main menu choose "Street". Press White, then hold L and press Y, Y. Press Start.
Turn off fouling in the NBA rules section of the options menu. Use the intentional foul to make the other team drop the ball, pick it up, score, and repeat as needed.
Turn off fouls and goaltending then just keep blocking them and there will be no foul.
To do the Vince Carter dunk (under the legs) on a break away, control Stackhouse, Bryant, Carter, Macgrady, or any other good player. Hold Turbo and go up for a dunk. You will make it most of the time.
MEGASTARS NBA 2K2 Team
MEGASTARS Sega Sports Team
MEGASTARS Visual Concepts Team
At tht beginning of a game, pause it, go to options, then NBA rules, then turn off reching in. Then, un-pause it and when the other team gets the ball, stay behind them until they get to half-court then run up to them and keep pushing X until you get the ball. You can do this as many times as needed.