Every punter hears it eventually: "just back the favourite — they win the most." Half of that sentence is true. We tracked every one of 3,185 UK and Irish races between 9 April and 7 July 2026, settled every result at official starting price, and this is what backing the SP favourite in all of them actually did:
Favourites won more than one race in three — comfortably the best strike rate of any blind strategy. And a £1 level stake on all 3,185 of them lost about £331. Both facts at once. That's the whole lesson of betting markets in one table.
The market isn't guessing. Thousands of pounds of opinion compress every horse's chance into its price, and favourites are — on average — priced slightly shorter than their true winning chance once the bookmaker's margin is added. Win 35% of the time at average odds that assume you'll win 39% of the time, and the arithmetic quietly takes ten pence of every pound. Not through drama. Through margin.
This is the difference between the two questions punters constantly swap by accident: "who is most likely to win?" and "which price is wrong?" The favourite is usually the answer to the first. Profit only ever lives in the second.
Any tipster, system or model claiming an edge should be measured against this baseline — not against zero. Losing 5p per £1 sounds bad until you know the default strategy loses 10p. The honest yardsticks:
1. Return against the favourite baseline over the same races — not
cherry-picked ones.
2. Closing line value (CLV) — do the prices you take consistently beat the
price at the off? If yes, you're seeing something before the market does; if no, short-term
profit is probably luck.
3. Losses left in. Any record that can be edited after the fact is
marketing, not measurement.
Every model pick since April 2026, logged pre-race with timestamped odds. Wins, losses, and the favourite baseline — side by side.
"Favourite" = the runner with the lowest official starting price in each race (3,185 races with a priced favourite, 9 Apr – 7 Jul 2026, UK & IRE flat and jumps). Returns are £1 level stakes at SP, no each-way, no Rule 4 adjustments beyond official results. Past performance does not predict future results.