handicapper

noun

1. Horse Racing.
   1. a racetrack official or employee who assigns the weight a horse must carry in a race.
   2. a person employed, as by a newspaper, to make predictions on the outcomes of horse races.
2. a person who determines the handicaps that will be placed on competitors.

noun

1. an official appointed to assign handicaps to competitors in such sports as golf and horse racing
2. a newspaper columnist employed to estimate the chances that horses have of winning races