In the statistics screen (F3) you get to track how much % of the time the ball has been in each sides of the map. However, these percentages get screwed when you cary the ball across the line to the other side.
Observe: The ball is on the red side. The statistics show a slow increase of the value for red and decrease for blue. When I volley the ball to the blue side (and it stops there), the opposite happens.
Now when I cary the ball back again to the red side, the % for blue will continue to rise, not start to drop.