Originally Posted by katbalu
I believe they are just saying the guy bets on horses.
Posted via Mobile Device
Oh right, that's not a term I've heard before. Over here a professional handicapper is a member of the Turf Club who gives horses a mark/rating to determine how good they are. Many races will be described ie: 47-75 handicap - Only horses rated 75 and under can enter it. 47 is the lowest possible mark a horse can have, and once it goes under this mark is can not be races on the racecourse (but can still be used in flapping and point to points).
The mark defines how much a horse will carry in the race - the horse rated 75 will carry the highest weight, and the weights go down through the field. Saying this, there are different allowances for age/gender/wins to take into account as well.