Today's AU - Caulfield Horse Racing Picks

Scratch

A horse is a scratch when injury or other necessity causes it to be withdrawn from the race.

Pari-Mutuel

A pool style wagering system, where all money input through betting is divided among those with winning tickets (save for various deductions by the track operators).

Across the Board

Refers to betting on a horse to finish first, second, and third to cover any of those scenarios happening during a race