I dont know if anyone else has this problem, but most of the time when the computer opponent gets past my defense and is breaking in on goal, my keeper charges way out of position and leaves the net wide open for a goal. I dont know if I am pushing the wrong button, or if it is automatic, or what. Does anyone know how to stop this from happening? Thanks.

It depends on where the computer is with the ball.. and check your Configurations for the buttons!