A sports handicapper is a person who predicts sporting event outcomes. They study teams and athletes to make their predictions. Sports handicappers usually give their predictions to others in the form of betting lines. Sports handicapping can be a very profitable endeavor.

roulette, (from French: small wheel ), gambling game in which players bet on which red or black numbered compartment of a revolving wheel a small ball (spun in the opposite direction) will come to rest within. Bets are placed on a table marked to correspond with the compartments of the wheel.