The person is called the loser.
"Keep your boasting till you've beaten," answered the Tortoise. "Shall we race?"
starter person
She had beaten me fair and square.
The person is usually called "the starter."
Because racist is for people who discriminate other people, so a person who drives a car is just called a race car driver.
racism
A person who rides horses (mainly thoroughbreds) is called a Jockey
Well, killing a race, religion, or group is considered genocide, so the person who coordinates this is called a genocidal.
The belief that one race is superior to others is called racism. It is a form of prejudice and discrimination based on a person's race or ethnicity.
An award called the red lantern
A Pansexual
Funnily enough, they are called a starter.