NZ - Waimate

Underlay

A horse that is going off at lower odds than it deserves based on performance.

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.

Bolt

A sudden veering to the inside or outside rail, often caused by the horse spooking or shying from something.