What is the difference between a favourite, joint favourite and co-favourite?
Clear, concise definition and practical interpretation of favourite, joint-favourite and co-favourite in horse racing betting markets, with sourced explanations, decision guidance, limitations and a worked hypothetical example.
By Sarah MitchellBetting & Tips EditorPublished · Updated · 812 words · 5 min read
The short answer
A favourite is the single horse quoted with the shortest odds in a race; it is the market leader. A joint-favourite occurs when exactly two horses share the shortest quoted odds. Co-favourite describes three or more horses sharing the shortest odds. These terms describe positions in the betting market rather than guarantees of performance; they simply reflect how bookmakers or tote pools rank perceived chances [jc-jargon] [gbr-glossary].
Basic definitions and how the market shows favourites
Favourite, joint-favourite and co-favourite are market labels indicating which runner(s) are quoted with the shortest odds before a race. The favourite is the single shortest-priced horse. Joint-favourite means exactly two horses share that shortest price; co-favourite is used when three or more share it. These labels come from bookmakers’ displayed prices, board prices on course or the tote’s pool pricing. They are shorthand for where betting interest and bookmaker assessment sits in the market at a given time rather than fixed attributes of the horse. The Jockey Club and Great British Racing both define the terms as descriptions of price position, not performance guarantees [jc-jargon] [gbr-glossary].
How bookmakers and tote pools create the shortest odds
Bookmakers set prices to balance their book: the shortest odds reflect the horse they consider most likely to win or which has attracted the most money. Board prices and the display odds feed into the starting price; the tote produces pool-based prices that move as money comes in. If betting action concentrates on one runner its odds shorten. If two runners attract similar support and end up showing the same best price, they are joint-favourites. If three or more reach the same best price, they become co-favourites. The labels therefore reflect market dynamics — supply of odds versus demand from bettors — rather than any formal rule about splitting stakes or payouts [gbr-glossary] [jc-jargon].
Practical decisions a bettor actually faces before betting
You must decide whether to back a favourite label because it indicates market support or because your own assessment agrees. Being the favourite means less value on simple probability-return grounds because the odds are shorter; joint- or co-favourite status signals shared support and possibly greater market uncertainty. Consider whether late money or information shifts have led to equal prices: a co-favourite situation can mean bookmakers are hedging between several similar prospects. Your choice is between accepting the displayed price, taking SP, or waiting for further market movement. Always check whether the odds you take are fixed-odds you lock in at bet placement or SP-style bets settled against the starting price [jc-jargon] [gbr-glossary].
Limitations of the labels and common misreadings
These terms do not quantify probability precisely and they do not indicate margin or liability division by bookmakers. Favourite status can change up to the off and is only a snapshot of the betting market at a moment in time. A joint-favourite or co-favourite outcome can arise because bookmakers have intentionally set similar prices for risk management, or because bettors have split support; the underlying reasons differ but the label is the same. Also, tote odds are pool-driven and may differ from bookmaker prices; the shortest market price may not equate to the tote dividend. Treat these labels as descriptive, not inferential, and avoid assuming a systematic edge purely because a horse is labelled favourite [jc-jargon] [gbr-glossary].
How the labels affect bet settlement and starting price practice
Settlement depends on the type of bet and the price taken. Fixed-odds bets are settled at the odds you agreed when placing the wager; SP bets are settled at the starting price derived from board or tote prices at the off. Whether a winner was a favourite, joint-favourite or co-favourite does not change settlement mechanics. If a horse is scratched after market formation, deductions such as those under Rule 4 may alter returns for pre-withdrawal bets; again this is a procedural adjustment unrelated to the favourite label. In short, labels help interpret market sentiment but the contractual terms of your bet govern payout calculations [jc-jargon] [gbr-glossary].
Worked example
hypothetical. Imagine a six-runner race where the betting board shows: Horse A 3-1, Horse B 3-1, Horse C 5-1, others longer. Horses A and B are joint-favourites because they share the shortest displayed price. If you take a fixed-odds 3-1 on Horse A and it wins, you are paid at 3-1 regardless of Horse B also being 3-1. If instead you take SP and the starting price for the winner is declared 3-1, settlement follows that SP. If tote pooled bets result in a tote dividend of 3.5 in decimal terms, tote payouts follow the pool calculation. This shows the operational distinction: favourite labels describe price positions; the actual transaction price you accepted or the SP/tote mechanism determines returns and any deductions [jc-jargon] [gbr-glossary].
Related questions
Does joint-favourite mean bookmakers split liabilities between two horses?
No. Joint-favourite simply means two horses have the same shortest odds. Bookmakers still manage their overall book and liabilities independently, adjusting prices according to stakes and exposure rather than an automatic split triggered by the joint-favourite label [gbr-glossary] [jc-jargon].
Will a co-favourite give the same payout as a single favourite if it wins?
If a co-favourite wins, the payout is determined by the odds taken or the starting price, not by the label co-favourite. Sharing top market position doesn't change the mechanics of odds or returns; the settled price at bet placement or SP decides returns [jc-jargon] [gbr-glossary].
Sources
- The Jockey Club: Get Past the Jargon — accessed
- Great British Racing: Jargon Buster — accessed
For education, not betting advice. No bet is guaranteed. Gamble responsibly.
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