Apprentice

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

State-Bred

A horse bred in a particular state and thus eligible to race in restricted state-bred races. These can be anything from maiden races to stakes events.

Also Eligible

A horse that is entered but does not draw into the body of the field due to too many entries, and thus is not permitted to start unless there are enough scratches to shrink the field size.