Today's GB - Sandown Park Horse Racing Picks

Pari-Mutuel

A pool style wagering system, where all money input through betting is divided among those with winning tickets (save for various deductions by the track operators).

Underlay

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

Yielding

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