Handicapping, in sport and games, is the practice of assigning advantage through scoring compensation or other advantage given to different contestants to equalize the chances of winning. The word also applies to the various methods by which the advantage is calculated. In principle, a more experienced player is disadvantaged in order to make it possible for a less experienced player to participate in the game or sport whilst maintaining fairness. Handicapping also refers to the various methods by which spectators can predict and quantify the results of a sporting match.
The term handicap derives from hand-in-cap, referring to a system wherein players placed bets or money into the cap of a neutral arbiter to reach an agreement as to the relative values of items sought to be traded. Handicapping is used in scoring many games and competitive sports, including go, chess, croquet, golf, bowling, polo, basketball, and track and field events. It also serves to foster wagering on horse racing events. Often races, contests or tournaments where this practice is competitively employed are known as Handicaps.
The term is also applied to the practice of predicting the result of a competition, such as for purposes of betting against the point spread. A favored team that wins by less than the point spread still wins the game, but bets on that team lose.
In a horse handicap race (sometimes called just "handicap"), each horse must carry a specified weight called the impost, assigned by the Racing secretary based on factors such as past performances, so as to equalize the chances of the competitors. To supplement the combined weight of jockey and saddle, up to the assigned impost, lead weights are carried in saddle pads with pockets, called lead pads.
The weight for age scale was introduced by Admiral Rous, a steward of the Jockey Club. In 1855 he was appointed public handicapper.