Today's AU - Randwick Horse Racing Picks

Scratch

A horse is a scratch when injury or other necessity causes it to be withdrawn from the race.

Workout

A workout is a timed sprint over varying distances prior to a race, meant to get a horse fit enough for competition.

Trifecta

A wager picking the first, second and third horses in the exact order. A trifecta box means paying more to ensure the horses can finish in any order in the top three spots.