After the attempt, to make the football games more attractive (to add stripping girls to the football show) - the new decision was made - to place girls just behind the nets. It will force those players to look just in the net, and, hopefully, to aim there. And, to make the football game more dynamic for sure - to give them 2 balls: to make results 2 times higher! So: Two balls are in the football game. The pins on the field are "symbolizing" those lazy (opponents) players. At least, they may hit the ball. Put more balls to the opponent's net, than they will put in yours.