mleise in tournaments like Robot Wars, you are counted out when you are immobilized and not in a brawl.
This is a good thing, RoD effectively does this, but it might be slower than players and viewers would like. If you blow up enough of their thrusters, you can go to the center and wait while RoD takes them out or they forfeit. Destroying 100% of thrusters is not required for RoD victory, so making a case for a ship having "disabled" status under some condition (maybe if it's not capable of moving faster than the ring shrinks?) might help.