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.

Scratch

A horse is a scratch when injury or other necessity causes it to be withdrawn from the race.

Yielding

A rain-soaked turf condition often producing a slick or heavy course and slower finish times.