For those like me who know nothing about soccer, these are the guys in blue on the lineup sheet. Its pretty easy to do on beginner. I used Man U all i did was get near the box, and swiped towards the goal, and scored with both. The goalie is atrocious on beginner so this is not hard. Just do not pass to a guy with a flag over their head, they are offsides and you will lose the ball.
Also you can change the lineup to only have one which is even easier.