I wonder how in a horse racing the last horse can win the race without having altering the principles ?!?

Query by rezav344: I wonder how in a horse racing the final horse can win the race without changing the principles ?!? come on it is a puzzle... Best solution:
Solution by rinat
If it truly is the only horse in the race, it really is the very first and at the very same time the final and undoubtedly the winner!