Harrahs Philadelphia - Race 6

Trifecta

A wager picking the first, second and third horses in the exact order. A trifecta box means paying more to ensure the horses can finish in any order in the top three spots.

Underlay

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

Synthetic Surface

A racing surface comprised of silica sand and fibers, such as recycled carpet or spandex. The mixture is then sealed with wax.