When you unlock the GameBreaker within a match, give the ball to your player that is the best at performing tricks and skills. Wait near the halfway line until an opposing player tries to steal the ball from you. Press Y to "skill" them. This gets your multiplier up. Do this two more times to the same player in quick succession to set the multiplier to x4. When this has been achieved, either quickly do lots of crossovers to fill the meter at the top or hold X to do a more complex skill. When the meter is filled, do a double dunk or long shot with a player. Instead of getting 2 points you will get 5 points.