Overlay

A horse going off at higher odds than his recent efforts show that he deserves.

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

Bobble/Stumble

A slip or a duck from a horse trying to leave the starting gates, often caused by the surface giving way under the feet. This can range from a mild misstep to a stumble down to their knees.