[gburlison]

Originally Posted by DMetalKong

I did a quick search for suction-related topics and didn't see anything, so here I go.

According to the rules possession is "Controlling the position and movement of a BALL." G43 allows robots to be in possession of 1 ball as long as G44-46 are not violated. G44 ensures that the ball must be touching the ground. G45 restricts mechanisms above the bumper zone. G46 allows balls to extend 3" into the frame perimeter. I see no restriction then on using suction (or some other holding device) to provide a firm grip on the ball. Thoughts?

We came to a similar conclusion, but after looking at the seams of the soccer ball we felt that it would be difficult to maintain suction. Remember the ball must maintain contact with the floor and there will be friction between the ball and the floor trying to pull the ball away. I say run a few tests and see what happens.