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Professor Furlong and Pascal at the AI Lab
THE AI LAB
PASCAL'S PANEL · WEEK 5

Pascal's Panel - Week 5: Four-fold on favourites vs Each-way the favourite

← All issues·The standings

This week on the Panel

Welcome to the Panel, where every betting idea gets a proper test. Two strategies in front of the Professor this week, both run over real races with the method laid bare, so you can see for yourself how each one holds up.

First, Pascal, the eternal optimist. He his accumulator came up short, leaving him eager to recoup, so this week he is chasing again with a four-fold on favourites: Four-fold on favourites, Four favourites in an accumulator. He is certain he has cracked it. He usually is, and that is exactly why his ideas are worth testing.

Second, a new idea. It comes from Eddie, one of our AI punter personas: the each-way optimist, the sort who would back anything covered both ways for a safety net. The persona is modelled, not a real reader (more on that just below), but the strategy it suggests is a genuine, testable one: Each-way the favourite, back the favourite each-way, hoping to secure a return even if it only places.

The Professor tested both the only way that counts: against 26,839 real British races, flat stakes to Starting Price, with the fallers and pulled-up horses counted honestly as losses. Here is how each one actually performs.

Pascal
Pascal
the eternal optimist
−30.9p / £1
This week's pick Four-fold on favourites

“Each favourite wins more often than it loses, so stack four of them together and the returns balloon while the risk barely shifts. One tidy Saturday slip and a tenner becomes a proper payday.”

Meet Pascal

Pascal is the Lab's resident optimist and Professor Furlong's foil, certain every single week that he has finally cracked it. He turns up with a fresh angle, usually an accumulator or a way to chase last week's loss back, pitches it with total confidence, and watches the Professor test it properly on real races. He never wins and never learns, and he is the warmest reason to keep coming back.

See the full experiment →
Eddie
the each-way optimist
−8.7p / £1
This week's pick Each-way the favourite

“If I back the favourite each-way, I get paid even when it just places, so I can't really lose, can I? It's the safe one. The win bit covers the dream, the place bit covers my back. A proper safety net.”

Meet Eddie

Eddie backs everything each-way so a placed horse still gives something back, which feels like a safety net. But the place part pays only a slice of already-shortened odds, and the margin sits in both halves, so landing often quietly hides a steady leak.

Their tell: anything covered both ways for a safety net

See the full experiment →

Professor Furlong's verdict

Professor Furlong
On Pascal's pick It loses, and heavily: four favourites in an accumulator comes out at -30.94% to Starting Price, so for every £100 staked you get back only about £69.06. Here is why. A favourite is no near-certainty, it wins barely a third of the time, and even backed on its own to SP it already loses 8.8p in the pound because the bookmaker's margin is baked into the price. When you multiply four of those prices together you multiply that margin four times over too, so the four-fold carries a far bigger built-in edge against you than any single leg. All four favourites must win or the whole slip is dead, and the run of days where just one gets turned over swamps the rare day they all land, which is exactly why the loss is this deep.
Professor Furlong
On Eddie's pick It is not a net, Pascal, it is two losing bets stapled together: across 28,098 each-way bets on the favourite the return is -8.65% to SP, so for every £100 staked you get back about £91.35. Here is why it loses. Each-way is really two stakes, a win bet and a place bet, and the place part only pays a fraction of the odds, usually a fifth or a quarter. Favourites are short-priced, so on a short favourite that place fraction often hands back barely more than your stake, sometimes less, while the bookmaker's margin, the overround, is baked into both halves. The bet lands often, more than three in five, which is exactly what makes it feel safe, but placing at cut odds never covers the times the favourite runs nowhere or, over jumps, falls and loses you the lot. The frequent small returns hide a steady leak, not a profit.

The standings

Both of this week's strategies sit on the leaderboard already. Here is where everything we have tested stands right now, ranked by real-world return, the least-negative at the top. Every system is a net loss, so the top row is the best real performer, not a winner.

24 systems tested · 28,098real races · none beat the bookmaker's margin. The best real return is −0.8pin the pound, so even the strongest system is a net loss. The bookmaker's margin is the reason.

#StrategyWho proposed itReal return (per £1)£/weekSampleStrike£200/week → today
1The AI's most-confident picksThe ProfessorGuest: RishiAI persona, modelled−0.8p−£2361——
2Odds-on favourites onlyThe systemsGuest: BarryAI persona, modelled−4.7p−£94,676wins 60%−£918
3Favourite in a big fieldThe systemsTested system−7.3p−£15618wins 24%—
4Favourite in a small fieldThe systemsTested system−7.8p−£163,924wins 46%—
5Favourite over jumpsThe systemsTested system−7.8p−£1610,297wins 37%−£2,181
6Festival favouritesThe systemsTested system−8.5p−£172,158wins 32%—
7Each-way the favouriteThe basicsGuest: EddieAI persona, modelled−8.7p−£1728,098places 62%—
8Favourite on soft groundThe systemsTested system−8.8p−£1810,672wins 35%—
9Back the favouriteThe basicsTested system−8.8p−£1828,098wins 35%−£1,979
10Favourite in handicapsThe systemsTested system−9.0p−£1818,843wins 30%—
11Favourite on the FlatThe systemsTested system−9.4p−£1917,801wins 34%—
12Follow the AIThe ProfessorTested system−11.4p−£236,601——
13Back the second favouriteThe basicsGuest: SandraAI persona, modelled−12.0p−£2428,096wins 21%−£3,047
14Top-rated horseThe basicsGuest: FrankAI persona, modelled−15.7p−£3124,841wins 19%−£4,306
15Top-rated in handicapsThe systemsTested system−16.2p−£3218,827wins 16%—
16Double on two favouritesThe multiplesPascal, the punter−16.9p−£34———
17Lucky 15 on favouritesThe multiplesPascal, the punter−17.6p−£35———
18A random horseThe basicsTested system−21.5p−£4328,098wins 13%−£5,526
19Back the lowest drawThe systemsTested system−24.3p−£4817,781wins 12%—
20Back the old stagersThe systemsTested system−26.9p−£548,676wins 9%—
21Each-way an outsiderThe basicsTested system−29.9p−£6026,414wins 7%—
22Four-fold on favouritesThe multiplesPascal, the punter−30.9p−£62———
23Back the outsiderThe basicsTested system−34.5p−£6928,098wins 3%−£4,899
24Four-fold on random horsesThe multiplesPascal, the punter−62.1p−£124———

24 systems tested · 26,839 real races · none beat the bookmaker's margin. The best real return is -4p in the pound. The bookmaker's margin, the over-round, the slice baked into every price so the odds add up to more than 100%, sits in all of them, and no selection rule we have tested clears it. That is the genuinely useful part: the leaderboard shows exactly where the edge goes.

See the full Betting Systems Leaderboard →

What we're testing next week

Pascal will be Pascal will be looking for a single big-priced outsider to land. And another of the personas has floated next week's guest will consider the top weight, and we will run it the same way, against real races, with the method shown and the real result reported.

If you take one thing from the Panel, take this: picking a likely winner is the easy part. Getting paid more than the true risk is the hard part, and the over-round is what stands in the way. That is the insight every row on the leaderboard is really measuring. Bet for fun, with money you can afford to lose, and read our track record for whether anyone, us included, holds a real edge at all.