Minus Pool
A pari-mutuel pool – typically a show pool - where one horse is so heavily bet that after deductions there is not enough money left to cover the prescribed minimum on each bet.
Scratch
A horse is a scratch when injury or other necessity causes it to be withdrawn from the race.
Fractions
The times recorded during the race; with timing starting just past the gate or when the gates open, then parroted for the quarter, half, three-quarters etc. Used as an indication of ability and speed.

