Bet types
The bet type decides how selections are combined and how the payout is calculated. The same pick can be a modest single or one leg of a large accumulator. This page explains the common types and the arithmetic behind them. Which types are available at Nine and their limits depend on your account and the event; the bet slip shows them.
Singles
One selection, one stake. The return is the stake times the decimal price. Singles are the simplest to track and carry a single margin.
Doubles, trebles and accumulators
Two or more selections combined so that all must win. The prices multiply. In a hypothetical example, three selections at 2.00 each give a combined price of 8.00. The margins multiply too: if each leg carries a margin, the combined bet carries more. That is why accumulators pay large amounts rarely.
System bets
A system bet places several combinations at once so that not every selection must win. A «Trixie» covers three selections in three doubles and one treble; a «Yankee» covers four selections in eleven bets. The total stake is the unit stake times the number of bets, so a system costs more than a single accumulator with the same unit.
Handicaps and lines
Handicap bets give one side a head start in goals, points or games, turning an uneven match into a closer price. Asian handicaps can split the stake across two lines, giving half-wins or half-refunds.
Each-way
Common in outright markets: half the stake on the selection to win, half on it to place within a set number of positions, at a fraction of the win price.
Bet builder
Several markets from the same event combined into one bet. Because the markets are related, the price is calculated by the bookmaker rather than by simple multiplication.
| Type | Selections that must win | Shape of results |
|---|---|---|
| Single | One | Steady, low variance |
| Accumulator | All | Rare, large wins |
| System | Some, depending on system | Mixed |
| Bet builder | All markets in one event | Rare, large wins |
Bet types and volatility, in casino terms
Choosing a bet type is like choosing a slot's volatility. Singles resemble a low-volatility game: frequent small results, few surprises. Long accumulators resemble a high-volatility slot with a feature that rarely triggers: most attempts lose and an occasional one pays many times the stake. In both worlds the shape is a matter of taste, while the long-run cost comes from the margin — in betting — or from the RTP of the version you play — in the casino. Pick stakes that fit the shape: smaller stakes for high-variance bets, just as on a volatile slot.
Bonus rules by bet type
Sports promotions often set a minimum price per selection or per combined bet, and some count only accumulators with a minimum number of legs. System bets and bet builders may be excluded. Read the sports bonus terms before choosing a type for bonus play.