Greyhound Forecast Bet Explained: How to Pick the First Two

What Is a Forecast Bet?

A forecast is a bet on two dogs to finish first and second in a single race, in the correct order. It is one of the most popular bet types in UK greyhound racing because it offers substantially higher returns than a simple win bet while requiring a level of analysis that is achievable for anyone who studies the racecard carefully. At Monmore, where six dogs contest every race, the forecast market is a natural fit for punters who can confidently identify the top two contenders but want a bigger reward than a win single provides.

The mechanics are straightforward. You select one dog to finish first and another to finish second. Both must finish in exactly those positions for the bet to win. If your first selection wins but your second selection finishes third, the bet loses. If your second selection wins and your first finishes second — the right two dogs but in the wrong order — the bet also loses. The precision required is the reason forecast odds are higher than win odds: you are predicting not just quality but the exact finishing arrangement of two specific runners.

In a six-runner greyhound race, there are 30 possible first-and-second combinations. That number comes from a simple calculation: six dogs that could finish first, multiplied by five remaining dogs that could finish second, gives 30 ordered pairs. Your straight forecast covers one of those 30 combinations, which means the raw probability — if every dog had an equal chance — would be approximately 3.3%. In practice, the probability of any specific forecast depends on the relative ability of the dogs involved, and forecasts involving the two strongest dogs in the field have a considerably higher probability than those involving outsiders.

Forecast bets at Monmore are settled at the Computer Straight Forecast price, which is calculated from the Starting Prices of the first and second-placed dogs using a formula that the industry has standardised. The CSF is not a fixed price you see before the race — it is determined after the result, based on the SP of both dogs. This means you know your selection when you place the bet, but you don’t know the exact payout until the race finishes and the CSF is declared. Typical CSF returns for a forecast involving the first and second favourites range from around 3/1 to 8/1, while forecasts involving a longer-priced runner in the first two can return significantly more.

Straight Forecast Versus Reverse Forecast

The straight forecast and the reverse forecast are two different structures for the same basic bet type, and choosing between them depends on how confident you are about the finishing order.

A straight forecast requires Dog A to finish first and Dog B to finish second, in that exact order. It costs one unit stake — one pound, for example — and pays the full CSF dividend if the two dogs finish in the specified order. This is the purest form of the forecast bet and the one that offers the highest return relative to stake, because you are making a precise prediction and being rewarded for that precision.

A reverse forecast covers both possible orders: Dog A first and Dog B second, or Dog B first and Dog A second. Because it covers two combinations rather than one, a reverse forecast costs two unit stakes — two pounds if your unit is one pound. If either combination lands, the bet wins and pays the CSF for the actual finishing order. The reverse forecast is effectively two straight forecasts packaged as a single bet, and its return is always less than double the straight forecast return, because only one of the two combinations can win and you’ve paid for both.

The decision between straight and reverse depends on your analysis. If your form assessment clearly identifies one dog as the likely winner and another as the likely runner-up — perhaps a strong front-runner and a consistent finisher who lacks early pace — the straight forecast is the more efficient bet. You have a view on the order, and the straight forecast prices that view correctly.

If you believe two dogs are significantly better than the rest of the field but you’re uncertain which will finish ahead of the other — perhaps two dogs with similar form, similar trap draws, and similar running styles — the reverse forecast makes more sense. You’re confident the top two is correct, but not the order, and the reverse covers both arrangements at the cost of doubling your stake. The break-even point is straightforward: if you would assign roughly equal probabilities to both orders, the reverse is the right structure. If you believe one order is at least twice as likely as the other, the straight forecast on the more likely order is the better value.

How the CSF Is Calculated

The Computer Straight Forecast price is derived from the Starting Prices of the first two finishers using a mathematical formula established by the betting industry. The formula is not published in a simplified form that most punters would find intuitive, but the principles behind it are understandable.

The CSF takes the SP of the winner and the SP of the second-placed dog and combines them in a way that reflects both the probability of each dog finishing in its position and a built-in margin for the bookmaker. Shorter-priced winners produce lower CSF returns, because the market already expected them to win. Longer-priced winners produce higher CSF returns, because the outcome was less anticipated. The second dog’s SP also affects the payout: a second-placed dog at long odds increases the CSF more than a second-placed finisher at short odds, because the specific combination was less likely.

In practice, CSF payouts for Monmore races fall into predictable ranges depending on the SPs involved. When the two shortest-priced dogs in the field finish first and second, the CSF typically returns between 3/1 and 6/1. When a mid-priced dog finishes first and a shorter-priced dog finishes second, returns often sit in the 8/1 to 15/1 range. When an outsider is involved in the first two, the CSF can reach 30/1, 50/1, or higher — though these results are correspondingly rare.

One important characteristic of the CSF is that it can differ from what you might expect by simply combining the two dogs’ win odds. The CSF incorporates conditional probability — the fact that if Dog A wins, the remaining five dogs are competing for second place, and Dog B’s chance of finishing second is affected by the winner’s removal from the field. This conditionality is why forecast returns don’t follow a simple multiplication of the two dogs’ individual odds.

Some bookmakers offer fixed-odds forecasts alongside the CSF option. A fixed-odds forecast gives you a guaranteed price at the time of betting, so you know your potential return before the race. The trade-off is that fixed-odds forecast prices are typically less generous than the CSF for equivalent combinations, because the bookmaker builds in a wider margin to protect against the risk of setting the price before the market has fully formed. For most regular Monmore punters, the CSF is the default forecast settlement and the one that offers the best long-term returns.

When Forecast Bets Make Sense at Monmore

Forecast bets are not appropriate for every race. They make sense when you can confidently identify two dogs that are significantly better than the rest of the field, and they make less sense when the race is open and competitive with four or five plausible contenders.

The ideal forecast race at Monmore has two clear standout runners — dogs whose form is visibly superior to the other four in the field — and a secondary question about which of those two will finish first and which second. In this type of race, a reverse forecast covering both orders gives you a strong probability of landing the bet, because the main risk is not whether your two dogs will finish in the top two but which order they’ll finish in. The CSF return on two standout dogs finishing first and second is modest by forecast standards, but the probability of landing the bet is high enough to make it a consistent value play.

Forecast bets also make sense when you’ve identified one strong contender for the win but believe the runner-up spot is likely to be filled by a specific dog that the market hasn’t identified as clearly. This scenario — a likely winner paired with an underrated dog for second place — produces higher CSF returns because the second dog’s SP tends to be longer, reflecting the market’s lower assessment of its chances. The risk is greater because your second selection is less certain, but the reward compensates for that risk if your form analysis is sound.

Forecast bets make less sense in races where the field is evenly matched. If your form analysis tells you that three or four dogs have a realistic chance of winning, the number of possible first-and-second combinations you’d need to cover starts to erode the value proposition. A race with four genuine contenders has twelve plausible forecast combinations, and covering even a fraction of them with straight forecasts increases your stake without proportionally increasing your expected return.

The discipline with forecasts, as with all bet types, is selectivity. Identify the races where the form strongly supports a two-dog scenario, place your forecast in those races, and pass on the rest. At Monmore, where six-runner fields and consistent form data make the top-two assessment tractable, forecast betting is one of the most rewarding bet types for punters willing to do the analytical work.