Both drivers must start the race (e.g., cross the start line) for bets to be action. If any driver is replaced before the start of the race, then all matchups will be deemed no action. If one driver fails to complete the race, then the other driver will be declared the winner. Where both drivers fail to complete the race, then the number of full laps completed will determine the result. If both drivers fail to complete on the same lap, then the official placing as assigned by the controlling authority will determine the result.