Note:  This game is also known as - Sega Sports NBA 2K2

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 the Sega Sports, Visual Concepts, and Team 2K2 in exhibition and street
modes.

Easy three pointers with Allen Iverson:-  Choose Allen Iverson and go to the left side of the court near the corner. If a defender is checking you, upfake. When he flies away trying to block your shot, shoot the three pointer. The release must be excellent. After shooting two or three of them, he will become hot. 

Easy win:-  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. 

Play as a Legends team in season mode:-  Go to season mode and edit the season. Take out any team and put in the Legends team. 

Kareem Abdul-Jabbar and Bernard King:-  Go to the active players section and find the 80's All-Stars. The West 80's team will have two players who are not active. They are Bernard King and Kareem Abdul-Jabbar. Take out any player(s) and trade them in for one or both of them.