Para-Nordic skiing
Because people with different types of disabilities ski against each other, a system has been created to make the results more fair.  The person with the best time does not always win.  Instead, the finishing time is multiplied against a percentage.  The percentage is based on how difficult a person's disability makes it to ski.  The time multiplied by the percentages gives a new time result.  This new time is used to determine who wins a race.