Cheat Menu:
Select Gameplay at Options menu and hold the D-pad Left + Left Analog-stick, Right and press Start. At the Options menu the Codes selection will now be unlocked.
Bonus Teams:
To unlock the Sega Sports, Visual Concepts, and Team 2K2 in exhibition and street modes enter MEGASTARS as a case-sensitive code.
Play as a Legends Team in Season Mode:
Go to Season mode and edit the season. Remove any team and put in the
Legends team.