Bolt

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

Claiming Race

A race in which horses are entered for a certain price, or claiming tag, which is also their sales price. An owner can claim any horse entered for the tag before the race begins, and owns them as soon as the gates open.

Main Track Only

A horse entered for main track only (MTO) is one hoping the weather forecast or track conditions will move the race off the turf course and onto the main track. They are scratched the morning of the race if the conditions stay dry.