Apprentice

A new jockey who has not ridden a certain number of winners in a specified time period.

Bullet

A bullet, or bullet workout, is a workout that was clocked as the best time for a certain distance on a given day.

Superfecta

A wager involving choosing the first, second, third, and fourth horses in one race in the exact order. A superfecta box involves paying more to ensure they can finish in any order in the top four spots.