William Hill

Betting Glossary - Essential Betting Terms beginning with D

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D'Alembert System
A stake management system used in many types of gambling. Under this system, for each stake you add one unit if you lose but deduct one unit if you win. This avoids the problem of impossibly large stakes inherent in certain other systems.
Dam
female parent of a horse
Dead Heat
A race where there is a tie for the winner or one of the placed horses.
Debit bet
A bet where a debit to the punter's bank account will be incurred if the bookie is owed money.
Decimal odds
See odds.
Declarations Clerk
Course official responsible for recording horses entered, or withdrawn from, a race
Declare
announce a horse intends to run in a race
Deposit Betting
Betting with money deposited in advance.
Dog
the team perceived to be most likely to lose.
Doll
hurdle used to mark our course, especially when an area is waterlogged
Double
A bet in which two horses must win or be placed (each way) on the same day. In sports betting, two events may be nominated on different days including major horse races advertised ante-post.
Double action
An "if bet" in sports betting that is processed if the precedent bet wins, ties or cancels.
Double Bet
a wager for twice the size of one's usual wager; also known as "double pop" or "doubling up."
Double Carpet
Slang for the price 33/1.
Double Header
Two separate games played by the same teams on the same day.
Down bet
See sell.
Draw
The starting positions of a horse race from numbered stalls are drawn the day before a race.
Drift
When the price of a selection moves out (gets bigger), often due to a lack of support. That selection is said to be "on the drift". A price drifts if the odds get longer, eg from 3-1 to 4-1. This will happen if bets are preferentially placed on other horses in the book.
Drifter
horse whose odds lengthen in the betting market
Drop him in
Instruction to jockey to settle horse in a racing position behind the frontrunner in a race
Dual Forecast
A tote bet where to win you must correctly forecast the first and second placed horses in a race in either order.