Here's my idea of the 2010 game based on the hint, my own crazy thoughts and some talk on here.
On the red alliance side there are 2 red robots and 1 blue robot.
On the blue alliance side there are 2 blue robots and 1 red robot.
Pipes on the top allow the individual robot to steal soccer balls and give them to it's teammates on the other side of the barrier.
Balls start on the side and back of the field. they CAN be removed from the goals by the individual robot.
At the end of the round tally up the balls in a teams goals to determine the winner.