Betting — From a View to a Ticket
Buy only the outcomes you have assessed, within a fixed risk budget.
Theory: the selection is only the beginning
You can have a sensible opinion about a horse and express it through a poor bet. The pool may charge more, the combination may be overbet, or the ticket may put too much of your money on one outcome.
Decide the most you're willing to lose before you build the ticket. For these exercises, use imaginary units. Chapter 15 deals with a real bankroll; you don't need a deposit to learn the mechanics.
Start with the simplest bet that expresses your view. Every extra combination needs its own reason, not just the hope of a bigger return.
Know what the ticket buys
A win bet pays if your selection wins, under the applicable rules. A place bet pays if it finishes within the places paid, which depend on the product and the field size. The place chance isn't simply the win chance multiplied by the number of places. It also depends on the shape of the horse's form. A horse that runs to a wide range of figures wins more often than its average suggests, because now and then it produces one big run, but it also finishes down the field more often. A consistent horse is the reverse: a weaker win bet and a stronger place bet. Treat the two markets as separate questions.
An exacta or forecast needs the first two in the right order. A quinella covers a chosen pair in either order. A trifecta or tierce needs the first three in order, and other products cover unordered combinations.
A multi-race bet needs qualifying selections across a set of races. Product names and rules differ between operators, so check the legs, the unit stake, what happens with scratchings, any consolation dividends and the limits before you think about value.
Backing a horse buys the winning outcome. Laying on an exchange takes the other side. Lay a 10-unit stake at 2.50 and your potential profit is 10, but your liability if the horse wins is 15, before commission. Don't confuse the lay stake with the most you can lose.
Joint outcomes need joint probabilities
The chance that A wins and B finishes second is:
P(A wins) × P(B finishes second, given that A wins).
Say A wins 30% of the time, and in the races A wins, B finishes second a quarter of the time. The exacta's chance is 0.30 × 0.25 = 7.5%. It isn't A's win chance times B's win chance: B's chance of finishing second depends on how the race unfolds, and on A having won it.
Across different races, treating the legs as independent can be a useful approximation, but shared weather, a track bias and your own systematic errors can tie your bets together. And a tote multi-race dividend isn't the product of the individual win odds. The money on each combination, and the product's rules, decide the payout. Pools publish the money on each horse, not on each combination, so you can't see it directly. Multiplying the race-by-race shares is only a rough first guess, and it tends to miss in one direction: popular horses get backed together more heavily than the multiplication suggests. A ticket that leans on favourites in every leg is often buying the most crowded lines.
A small apparent edge in each leg doesn't make a particular ticket profitable. You need a view of its combined probability and of the return on offer.
One structural fact from the Scandinavian V-pools we measured: upsets paid roughly nine times what favourites paid per winning ticket. That is a property of how the pool distributes money, not evidence that outsiders are underbet; the favourite–longshot bias in Chapter 12 points the other way. It does explain why the multi-race returns worth having come from a well-founded selection the crowd is against, and not from buying one leg wider.
A/B/C/X is a budgeting shorthand
You can organise a ticket in groups:
- A: the main selections the ticket rests on.
- B: credible alternatives you may cover selectively.
- C: less likely or less attractive alternatives, used only in limited combinations.
- X: left off this ticket.
The letters are choices about coverage, not properties of the horses. X means you didn't buy that outcome; the horse can still win.
A very likely winner can be unattractive at its price. A less likely horse can be a useful selection if the pool underrates its chance enough. Let both probability and value decide the groups.
An invented four-leg example
Say a hypothetical four-leg product has two candidates per leg:
| Leg | A selection | B selection |
|---|---|---|
| 1 | 1 | 2 |
| 2 | 3 | 4 |
| 3 | 5 | 6 |
| 4 | 7 | 8 |
Buying every combination at one unit costs 2 × 2 × 2 × 2 = 16 units. That covers the all-A combination, four combinations with exactly one B and eleven with two or more B selections.
A different way to spend the same 16 units:
| Ticket | Units on this combination |
|---|---|
| 1–3–5–7 | 8 |
| 2–3–5–7 | 2 |
| 1–4–5–7 | 2 |
| 1–3–6–7 | 2 |
| 1–3–5–8 | 2 |
| Total | 16 |
This weighted ticket buys only five distinct combinations. It bets on the A selections being strong, with at most one of them needing a replacement. If two B horses win their legs, it loses completely.
Either ticket can be the right one. Which is better depends on the probabilities and the payouts. What the example shows is what concentration changes: your coverage and your exposure, not the horses' chances of winning.
A box can be deliberate
A box covers the permutations or combinations of chosen horses under that bet's rules. It can be a fair way to express a roughly equal view. It can also buy a lot of weak combinations just because the interface makes it easy.
Before you submit, look at the actual tickets. Count the combinations, check for repeated lines and look at the stake on each. Small unit stakes can still add up to a large total.
If you can't explain why a combination is there, take it out or go back to the analysis. If you can't estimate the joint outcomes involved, the simple win market may be a better place to learn.
Carryovers change the pool, not the standard of evidence
Money carried over from an earlier pool can improve the ratio between new stakes and the money available for prizes. How much depends on the rules, the deductions, the eligible winning outcomes and how much new money turns up.
Every combination still has to earn its place. More competition may arrive, and a generous-looking pool can still punish the combinations you chose badly. Treat a carryover as a change in the economics worth investigating, not a free lunch.
Several tickets, one risk
A win bet, an exacta and a multi-race ticket can all rest on the same horse. They're separate tickets but one risk.
Write down the total you lose if that horse disappoints. Do the same for a shared assumption, such as a strong front-running bias. Different ticket names don't diversify the opinion underneath them.
Practical: compare two tickets
Quiz: what did you buy?
Up next: how to review a decision when the result is trying to rewrite your memory.