Easy victory
If you are losing press start and got to the controller switch screen.
Then switch to the other team. Now you will be winning.

Easy Goal
This cheat only usaually works against the computer.
When the opposing goalie has the ball, stand in front of him
and a few steps back. The goalie will kick the ball into your head
and it will bounce back into the goal.

Sounds
Press any direction on the control pad to make the crowd boo.
Or press the C buttons for other cool sounds.