Robot is designed for these contests: 

 Wheeled Envoy Doggedly Gyrates Ecstatically (or, W.E.D.G.E.) is a LEGO sumo robot.  It has advanced programming, and perhaps the best possible wedge you can make with LEGO.  It placed 2nd at the BrickWorld Chicago 2012 Super Sized Sumo Event.  Programmed with RobotC 3.x.  You can see it, as well as other entries in the BrickWorld contest here:  http://www.youtube.com/watch?v=Iq7nSlZqF8w

1-W.E.D.G.E.JPG2.07 MB