Horse Racing markets use the event format and a defined scoring or settlement question. Race identity includes the course, scheduled off time and race number. Win and place selections use different finishing conditions; the number of paid places is part of the offer. In an illustrative eight-runner race, a horse finishing second loses a win selection but may satisfy a place selection, depending on the stated terms.
Price describes a conditional return
Decimal odds include the original stake in the total return. In a hypothetical example, a 100-unit stake at 2.40 returns 240 units if the selection wins: 140 profit plus the original 100. A losing selection returns nothing under ordinary win-or-lose settlement. These figures illustrate arithmetic, not a forecast.
The reciprocal of decimal odds gives a price-implied probability before adjusting for margin: 1 ÷ 2.40 is about 41.67%. It is not a measured certainty about the event. When the implied probabilities of every mutually exclusive outcome add above 100%, the excess indicates an overround in that set of prices.
Compare prices only for the same race, runner and selection type. A win price and a place price are different propositions. Fixed odds and starting-price products also establish prices at different stages. Deductions or exchange commission can affect the final amount retained.