He/she isn't, the horse is. The handicapper looks at the previous form (results) for all horses in the race and decides what weight each horse ought to carry to, in theory, make the race a dead-heat. The jockey and tack (saddle etc.) are weighed and anything below the handicap weight given to the individual horse is added as weights, into the weight cloth. Jockey and tack are weighed again after the race to check the weight, allowing a little for sweating of the jockey.
Impost
Horse racing. Robyn Smith became a jockey in 1969 and was the first woman to win a major race in the United States (Paumonok Handicap at Aqueduct in 1973).
A person who rides horses (mainly thoroughbreds) is called a Jockey
That is a jockey
We saw as the jockey rode past all the others in the race
The rider of a horse in a race is called a Jockey.
In the United States, in Thoroughbred racing the jockey wins 10% of the horse's winnings for a given race.
A jockey.
jock or jockey
Frank Hayes was a jockey who, in 1923, suffered a fatal heart attack in the midst of a race at Belmont Park in New York. His horse, Sweet Kiss, finished and won the race with his lifeless body still atop, making him the first, and thus far, only, jockey to win a race after death.
the same as a male - a jockey!
The rider is called a jockey.