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RaceAlpha

The race predictor

Our form-only model, split into the kinds of information it reads, with a slider for each. Members get it on every race.

How it works

Every runner's form-only chance comes from a few hundred facts about its form. We group them into seventeen kinds: the jockey, the barrier, its rating against this field, its recent form, its past-run speed and so on. Each kind gets a slider. At 100% the sliders give you our model exactly; at 0% the field is level. Move one up and that kind of information gets more say; move it down and it gets less.

There is no market in it. It is a way to explore our price, not a better one.

The Ladies' Purse, Sha Tin, Sunday 8 November 2026

A Group 3 handicap over 1800 metres on good ground, 13 runners. Speed Dragon won at $13. Our form model had him 4th at 8.2%; our top pick, Sky Jewellery at 27.1% and the $2.6 favourite, ran 11th.

Our order before the race

Win chance on our form, with where each runner finished.

  1. 13.Sky Jewellery27.1%11th
  2. 24.Massive Sovereign14.6%3rd
  3. 32.Numbers10.6%6th
  4. 47.Speed Dragon8.2%1st
  5. 59.Le Zonda6.7%5th
  6. 612.Californiatotality6.7%8th
  7. 710.Silvery Breeze6.1%4th
  8. 81.Beauty Joy5.3%13th
  9. 95.Soleil Fighter3.5%7th
  10. 1013.Stunning Peach3.5%10th
  11. 118.Gentlemen Legacy2.9%2nd
  12. 1211.Romantic Thor2.9%12th
  13. 136.Ensued1.8%9th

Move the sliders

This is the predictor as members see it on the card, on this race. Drag a slider and the field re-ranks. Under the list, the buttons find the sliders that line the field up as it finished.

Our form-only model, split into what it reads. 100% is the model as it stands; move a slider to give that kind of information more or less say. No market in it: a way to explore our price, not a better one.

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Win chance under your sliders ▲▼ places against our form-only order
  1. 13.Sky Jewellery27.1%11th
  2. 24.Massive Sovereign14.6%3rd
  3. 32.Numbers10.6%6th
  4. 47.Speed Dragon8.2%1st
  5. 59.Le Zonda6.7%5th
  6. 612.Californiatotality6.7%8th
  7. 710.Silvery Breeze6.1%4th
  8. 81.Beauty Joy5.3%13th
  9. 95.Soleil Fighter3.5%7th
  10. 1013.Stunning Peach3.5%10th
  11. 118.Gentlemen Legacy2.9%2nd
  12. 1211.Romantic Thor2.9%12th
  13. 136.Ensued1.8%9th
What would have called it hindsight, this race only

Speed Dragon won from 4th on our form at 8.2%; no setting near our model lifts it. One race says little about the next.

Rating in this field 80% · Career record 80% · Jockey 120% · Barrier 80% · Track record 80% · Recent form 90% · 6 more

Line the field up as it finished:

With this many sliders a result can usually be lined up after the race, so doing it says little about the next one.

What it took

After a race, a setting that lines up the result can nearly always be found: on our 10 November races, one put the winner on top in all 16 and the first four in order in 15. That is hindsight. When we fitted the sliders on a meeting's earlier races and used them on its later races, they added at most about half a percent. The sliders show what our model read; they do not find the next winner.

Where to find it

On the card, open any rated race: the race predictor sits under the position guide, one line until you open it. Your sliders are kept on your device from race to race. Finished races also show the hindsight fit and the line-up buttons, and every runner shows what moved its form-only price. It is part of membership, $39.99 a month with seven days free. See the plans, or read how the rest of the card works.