Does Best Odds Guaranteed cost me anything?

No. BOG is a concession that only ever works in your favour — you are paid the bigger of your taken price or the starting price. It never pays you less than the odds you took.

Does BOG apply to every sport?

No. It is overwhelmingly a horse and greyhound racing feature because those sports have a Starting Price. Most other sports have no official SP for it to reference, so BOG does not apply.

Are there limits on Best Odds Guaranteed?

Usually yes. Operators commonly cap the extra amount BOG can pay, may exclude certain bet types or ante-post bets, and typically restrict it to bets placed after a set time on the day. Check the terms.

What Is Best Odds Guaranteed?

Best Odds Guaranteed in one sentence

Best Odds Guaranteed (BOG) means that if you back a horse or greyhound at a price, and the official Starting Price ends up bigger, the bookmaker pays you at the bigger price. You take the early odds, but you are never worse off than the crowd who waited.

It is one of the few genuinely bettor-friendly features in the industry, because it only ever moves in your favour. You cannot lose money because of BOG. The worst case is that your taken price and the starting price are identical and it makes no difference.

How it works with a real example

Say you back a horse at 6.00 (5/1) an hour before the race. As money comes in, the horse drifts — fewer people fancy it — and it goes off at a Starting Price of 8.00 (7/1).

Without BOG, you are paid at 6.00, the price you took.
With BOG, you are paid at 8.00, the bigger Starting Price.

On a 10.00 stake that is the difference between a 60.00 return and an 80.00 return. You did nothing extra to earn it; the feature simply upgraded your price.

Now flip it. If the horse had shortened to 4.00 (3/1) instead, BOG would leave you on your original 6.00. It never drags you down to the smaller price. That asymmetry — up but never down — is the whole appeal.

Why it is mostly a racing thing

BOG depends on there being an official reference price at the off, and in racing that is the Starting Price (SP): the odds officially returned at the moment the race begins. Football, tennis, basketball and most other sports have no equivalent official SP, so there is nothing for BOG to compare your price against.

That is why you will almost always see BOG advertised for horse and greyhound racing and rarely anywhere else. When you compare operators on our best betting sites page, racing sites are where this concession genuinely matters.

The fine print worth reading

BOG is real value, but it is rarely unlimited. The concession usually comes wrapped in conditions, and honest comparison means reading them rather than assuming. Common terms include:

A time restriction. BOG frequently only applies to bets placed after a certain time on race day — often from the morning of the race, not to overnight or ante-post bets placed days earlier.
A payout cap. Many operators limit the extra amount BOG can add per bet or per day. Above that ceiling you get your taken price, not the bigger SP.
Bet-type exclusions. Some bet types, certain multiples, or specific markets may be excluded.
Non-runner adjustments. If a horse is withdrawn, tote and SP rules can affect how prices and any Rule 4 deductions interact with BOG.

None of these make BOG a trick. They just mean the headline “Best Odds Guaranteed” badge is not a blank cheque, and two sites offering it can differ a lot in how generous the terms actually are. Our reviews call out where BOG is capped or time-limited so you are not comparing on the label alone.

How to actually benefit from it

BOG rewards taking an early price on a selection you have already decided to back — it does not reward betting more or betting differently. A few practical habits:

Take a price when you are happy with it. If your selection later drifts, BOG captures the bigger SP for you automatically; if it shortens, you have locked in the better early number.
Check the qualifying time. Make sure your bet falls inside the window where BOG applies, or the concession simply will not trigger.
Know the cap. On larger stakes, the payout ceiling is where BOG quietly stops helping, so factor it in.
Compare like for like. Two operators can both say “BOG” and mean very different things once you read the caps and exclusions.

You can use our tools to line operators up side by side, and our guides hub explains related racing concepts such as Starting Price and Rule 4.

The honest bottom line

Best Odds Guaranteed is one of the rare offers that is exactly as good as it sounds — with the caveat that the terms decide how good. It never pays you less than the price you took, and on drifters it can meaningfully improve your return. But it is not a strategy and it will not turn a losing approach into a winning one; it is a small, structural edge on prices you were going to take anyway.

Treat it as a reason to prefer one racing site over another, not as a reason to bet more than you planned. The value is in the price, not in the volume.

18+. Gambling involves real financial risk. If it stops being fun, take a break — play responsibly.