Skip to specific matches
On the game's main screen, enter the option Story Mode, then on the next section, the second option (Password). Entering the following passwords can skip you ahead to later matches in the Story Mode.
Warp Across the Court
At the title screen, hold Up + Left then press Start. Now, during gameplay, except during the initial toss of the ball, press Up, Up, Down, Down and your character will warp forward a distance equal to about 1/5 of the court's width (though not closer to the basket than the two-point line).