To Win or Not?

The finish of one race is the start of the next

Your competitor in a running race establishes a definitive gap and heads to certain victory.  They stop 10 meters before the finish line believing they have won the race.  You close on them quickly seeing their mistake.  You can pass them and profit from their error as they stand in false celebration.  What do you do?

Here is how one competitor acted.  Action defined by belief.