All human operators must be outside the ring by the blowing of the second whistle. Any device which moves towards its opponent before that time will force a restart of the trial. Three restarts will disqualify a competitor from that match. The match may be re-run later, but only if the problem is fixed to the judge's satisfaction. A trial ends when an one entrant leaves the ring or 2 minutes have passed.
Competition continues until all winners and secondary winners have faced each other.
Prizes will be awarded individually to best autonomous, best radio-controlled, and best tethered Sumobot designs.