Hidden Teams

At the Title screen press Left Up B Down Up Right C.

Super Dunks

At the Versus screen press Down Up for about 5 to 10 seconds.

Whirlwind Option

At the Team MatchUp screen rotate your joystick in a clockwise 360 motion until the game begins. You will now have the whirlwind option for the entire game.

Note: this trick does not work in tourh3nt mode.