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Trainer profile

J Leroy

421 runners in the last 5 seasons · 57 individual horses
As at 20 Oct 2026 · KTB archive: 2005–present, updated daily
Last runner yesterday 100% of runners on the flat
Last 5 seasons Lifetime (2022→)
from 1 Jan 2022
26–421
Wins / Runs
6.2%
Strike rate
n=421
92 (22%)
Placed
1.17
Fair A/E
n=421 · 0.96 incl. margin
+13.50
£1 level stake
n=421 at SP · +3.2%
£522k
Prize money (window)
Strike by season
3.6%
KTB Yard Profile

Sends out around 80 runners a season, almost all on the flat, winning with 6% of them — beating the margin-free market read across five seasons (Fair A/E 1.17).

Deterministic profile computed from 421 archived runs (last 5 seasons) · updated 20 Oct 2026
KTB at a glance Mme Lorette Gallo: 11.1% from 54 Claiming riders: 7%
The read

The record is strongest at Longchamp (FR) (10.9%, n=55), clear of the yard's 6.2% baseline. Debutants struggle at 0% (n=30, Fair A/E 0.00). Runners with a claiming rider up are the standout value angle: 7% strikes only just above baseline, but Fair A/E 1.78 and +33.30 to a £1 stake over 100 runners — a record the market has persistently underpriced. Mme Lorette Gallo rides 13% of the entries and edges the yard's average (11.1% vs 6.2%, A/E 2.15) — the partnership beats the margin-free market read. The yard also reads well off a 15-30-day break (9.8%, n=163). The record reads poorly over 6f – 7f — 0% over 54 runners, 6.2pts below the baseline. The stable star of the record: Love The Stars (FR) — 5 wins from 33 runs for the yard.

Written from the figures on this page — every claim carries its sample. Descriptive, not a tip.

Yard patterns

the angles behind the record · vs 6.2% baseline
Fresh · 61+ days off
5.3%−0.9
n=76 · A/E 1.02 · £1 −8.30
New recruits · first run for the yard
3.4%−2.8
n=29 · A/E 1.07 · £1 −6.90
Debutants · first career start
0%−6.2
n=30 · A/E 0.00 · £1 −30.00
First-time headgear · true-first definition
0%−6.2
n=29 · A/E 0.00 · £1 −29.00
Headgear returns · back on after a bare run
0%−6.2
n=14 · A/E 0.00 · £1 −14.00
When favourite
0%
n=11 · A/E 0.00 · £1 −11.00
Claiming riders · a claimer in the saddle
7%+0.8
n=100 · A/E 1.78 · £1 +33.30

Each tile is the record in that situation vs the 6.2% baseline — descriptive splits with the sample always shown, not tips. Tiles under 30 runs render muted. Headgear figures use the true-first definition (first gear appearance in the captured career); returns are gear back on after a bare run. Claiming riders are runs where the booked rider carried a weight claim. Group / Graded covers pattern and listed races.

Notable angles

vs their own baseline
With Ludovic Boisseau 14.7% vs 6.2% · n=34
Over 6f – 7f 0% vs 6.2% · n=54
With debutants 0% vs 6.2% · n=30
With Mme Lorette Gallo 11.1% vs 6.2% · n=54
At Longchamp (FR) 10.9% vs 6.2% · n=55
Off a 15-30-day break 9.8% vs 6.2% · n=163
Descriptive splits ranked by divergence × sample — insight, not instruction. Every angle carries its N; nothing under 30 runs qualifies. Rows within 2pts of the baseline appear only when the market-relative read (Fair A/E) diverges, and show it.

Record by conditions

same window as header

Going

GoingRWSR£1
Standard (AW) 246 14 5.7% −51.70
Soft 66 5 7.6% +42.40
Good to Soft 50 4 8% +36.60
Good 37 3 8.1% +8.20
Heavy 22 0 0% −22.00

Courses

CourseRWSR£1
Chantilly 151 7 4.6% −57.90
Deauville (AW) 119 9 7.6% +8.40
Saint-Cloud 69 4 5.8% −35.50
Longchamp (FR) 55 6 10.9% +125.50
Compiegne (FR) 7 0 0% −7.00
Vittel (FR) 5 0 0% −5.00
Clairefontaine (FR) 4 0 0% −4.00
Dieppe (FR) 3 0 0% −3.00
Amiens (FR) 3 0 0% −3.00
Les Sables-d'Olonne (FR) 2 0 0% −2.00
Fontainebleau (FR) 2 0 0% −2.00
Chateaubriant (FR) 1 0 0% −1.00

Class

ClassRWSR£1
Class 4 13 0 0% −13.00
Class 3 9 0 0% −9.00
Class 2 2 0 0% −2.00

Market position

In the bettingRWSRA/E£1
Favourite 11 0 0% 0.00 −11.00
2nd–3rd fav 42 8 19% 1.45 +4.10
4th–6th fav 80 4 5% 0.64 −44.90
7th+ in betting 288 14 4.9% 1.62 +65.30
Fair A/E per band is the tell: near 1.00 the market had it priced right; well above, the wins came where the market didn't expect them.

Rows below n=30 are shown faded — a small sample is a fact, not a trend. Every figure carries its N.

Horses trained

same window as header · most-raced first
HorseRWPlLast ran
Love The Stars (FR) 33 5 7 19 Oct 26
Rubis Gold (FR)from R Le Gal 28 2 12 24 Jun 26
Markswoman (FR)from Y Barberot 26 1 6 18 Oct 26
Combermere (FR)from R Le Gal 23 3 5 13 Oct 26
Landaryna (FR)from Guillaume Courbot 21 0 5 27 Sep 26
Alpengeist (GB)from R Le Gal · then Bart De Koninck 21 0 8 7 Apr 26
La Javanaise (FR)from R Le Gal · then Guillaume Courbot 19 2 4 23 May 25
Mon Comedien (FR)then M Seror 16 1 4 5 Feb 26
On Y Va (IRE)from R Le Gal · then Marc Rosseel 16 2 7 17 Apr 25
Feve (FR)from P Sogorb 13 2 3 29 Sep 26
Louise De Bade (FR) 10 0 1 13 Oct 26
Royalties (FR)from F Vermeulen 10 0 2 4 Jul 25
All 57 horses sent out in this window. Runs, wins and places only: a strike rate or a return on a handful of runs is noise, so none is quoted per horse — each horse's full record is on its own page.
Where they came from · where they went next

Of the 57 horses listed, 27 arrived from another yard in our archive, most often from R Le Gal (8) and Elias Mikhalides (2); 30 had their first archived run for this yard.

19 have since run for another yard, most often for Guillaume Courbot (5) and Marc Rosseel (2); 38 have no later run for another yard in our archive.

Read from each listed horse's whole archived career (2005 onwards), not only this window, and counted over the horses listed above, not the whole string. “First archived run” means our archive holds nothing earlier, not that the horse was unraced. A horse with no later run elsewhere may still be here, be off the track, or have run somewhere our archive does not cover — none of that is asserted.

Current form

significance-gated

Last 14 days

Small sample
0 from 12
Only 12 runners in the last 14 days — too few to read against the baseline (gate: n≥15). The card states the sample and stays neutral.

When the yard fires

strike by month, 5 seasons
JFMAMJJASOND
375141112593550
A flat yard: the season runs Mar–Oct. Muted months are small samples (under 30 runs) — read them with the caution they deserve.

Jockey bookings

same window · biggest samples first
Go-to riderMme Lorette Gallo
13% of all rides
11.1% SR · A/E 2.15
RiderRWSR£1
Mme Lorette Gallo 54 6 11.1% +61.40
Rosario Mangione 42 3 7.1% +50.20
Ludovic Boisseau 34 5 14.7% +50.30
Clement Lecoeuvre 31 1 3.2% −9.60
Muted rows are under 30 rides and sit behind "Show all".

Career highlights

lifetime archive, 2022→
26
Archived wins
£522k
Prize money
2024
Best season · 14 wins
Combermere (FR) — Prix de la Reine Marguerite (Handicap) (4yo+) (Grande Course) (Turf) Longchamp (FR) · Sep 2024
£23,043
Feve (FR) — Prix du Petit Pre (Handicap) (Turf) Longchamp (FR) · Jun 2026
£22,130
Bad Boy (FR) — Prix de la Reine Marguerite (Handicap) (4yo+) (Grande Course) (Turf) Longchamp (FR) · Aug 2025
£21,033
Notable horses
Love The Stars (FR) Combermere (FR) Lovely Miss (FR) Rubis Gold (FR) La Javanaise (FR) On Y Va (IRE)

Sires in the string

progeny record · win % by ground and trip
Storm The Stars (USA) 15.2% · 5–33
Progeny have won 13.5% of 252 runs since 2008 (49 horses).
Supplicant (GB) 7.1% · 2–28
Progeny have won 6.8% of 235 runs since 2008 (25 horses).
Recoletos (FR) 3.8% · 1–26
Progeny have won 8.9% of 786 runs since 2008 (110 horses).
Makfi (GB) 12% · 3–25
Progeny have won 11.3% of 3,827 runs since 2008 (358 horses).
Hello Youmzain (FR) 9.1% · 2–22
Progeny have won 10.2% of 990 runs since 2008 (162 horses).
Dariyan (FR) 0% · 0–21
Progeny have won 6% of 1,108 runs since 2008 (140 horses).
Top line: the yard's own record with each sire's runners (win %, wins–runs), same window as the header; faded under 30 runs. Beneath it: every run by that sire's progeny in our archive since 2008, as at 20 Oct 2026 — what they have done, not a forecast. A going or a distance is named only where at least 100 progeny runs sit 3 or more points from the sire's own win rate. Distance bands cover Flat and jumps together.

The record

latest 50 of 421 · newest first

The latest 50 of 421 archived runners, newest first. The full record runs from 5 November 2022 to 19 October 2026.

DateCourseHorseRaceFinishSP
19 Oct 26 Deauville (FR) Love The Stars (FR)J: Mme Axelle Duquesnoy Prix De La Foret D'ecouves9.5f · Standard · 16 ran 16th 50/1
18 Oct 26 Longchamp (FR) Markswoman (FR)J: C. Soumillon Prix De La Chaussee7f · Good To Soft · 11 ran 2nd 11/2
16 Oct 26 Fontainebleau (FR) Capouchine (FR)J: P Cheyer Prix Des Biches11f · Good To Soft · 12 ran 9th 33/1
15 Oct 26 Chantilly (FR) Amoune (FR)J: C. Soumillon Prix Du Jardin Anglais6f · Good · 6 ran 5th 8/1
14 Oct 26 Saint-Cloud (FR) Calla Fonda (GB)J: Mme Lorette Gallo Prix Des Boucles De La Seine10f · Good To Soft · 16 ran 10th 33/1
14 Oct 26 Saint-Cloud (FR) Native Ruler (GER)J: Mme Axelle Duquesnoy Prix Maurice Larraun12f · Good To Soft · 10 ran 8th 40/1
13 Oct 26 Longchamp (FR) Combermere (FR)J: Hugo Boutin Prix De Miromesnil12f · Good To Soft · 15 ran 11th 28/1
13 Oct 26 Longchamp (FR) Louise De Bade (FR)J: Cristian Demuro Prix De Secretan12f · Good To Soft · 16 ran 2nd 33/1
10 Oct 26 Chantilly (FR) Golden Paco (FR)J: Aurelien Lemaitre Prix De La Maniguette8f · Soft · 9 ran 8th 100/1
09 Oct 26 Compiegne (FR) Elenka (FR)J: Fabrice Veron Prix Du Carrefour Du FrancportClass 3 · 7f · Very Soft · 15 ran 7th 16/1
08 Oct 26 Saint-Cloud (FR) Lacalas (FR)J: Mme Lorette Gallo Prix De Rocquencourt10f · Soft · 15 ran 15th 66/1
08 Oct 26 Saint-Cloud (FR) Lady Gatsby (FR)J: Hugo Boutin Prix De Rocquencourt10f · Soft · 15 ran 6th 50/1
29 Sep 26 Chantilly (FR) Feve (FR)J: Tony Piccone Prix De La Chambre Du DucClass 2 · 9.5f · Standard · 16 ran 14th 12/1
27 Sep 26 Amiens (FR) Elenka (FR)J: Fabrice Veron Prix Du Pdv Pmu L'ocean Equihen-plage (Prix Edouard Acker)Class 4 · 8f · Soft · 14 ran 2nd 5/1
27 Sep 26 Amiens (FR) Louise De Bade (FR)J: Fabrice Veron Prix Dominique GerouxClass 4 · 11f · Soft · 13 ran 12th 4/1
27 Sep 26 Amiens (FR) Landaryna (FR)J: Theo Le Graet Prix Dominique GerouxClass 4 · 11f · Soft · 13 ran 10th 14/1
18 Sep 26 Saint-Cloud (FR) Lady Gatsby (FR)J: Mme Lorette Gallo Prix Du Jardin Du Piqueur10f · Good · 14 ran 7th 40/1
18 Sep 26 Saint-Cloud (FR) Calla Fonda (GB)J: Mme Lorette Gallo Prix JouvenceClass 3 · 12f · Good · 13 ran 12th 40/1
18 Sep 26 Saint-Cloud (FR) Amoune (FR)J: Aurelien Lemaitre Prix Fast Fox6f · Good · 12 ran 3rd 14/1
13 Sep 26 Longchamp (FR) Elenka (FR)J: Fabrice Veron Prix Du Passage Du Chemin Vert7f · Good To Soft · 15 ran 3rd 18/1

Drawn from the whole archive (2005 onwards), so it can include runs outside the window the header statistics cover. Non-runners are not listed. A finish shown in letters is a non-completion (F fell · UR unseated · PU pulled up · BD brought down).

Quick answers

What is J Leroy's strike rate?
J Leroy has won 26 of 421 runners since 2022, a strike rate of 6.2% (as at 20 October 2026). Figures are computed from our own results archive.
Which course does J Leroy do best at?
Longchamp (FR) by strike rate: 6 wins from 55 runners (10.9%) since 2022. Read from the 15 courses with the most runners on the same basis, and only those with at least 30 — a small sample cannot top the list, and a rarely-visited course is not in the comparison.
Who rides most for J Leroy?
Mme Lorette Gallo, with 54 runners since 2022 — 13% of the total. That pairing has won 6 (11.1%).
Is J Leroy in form?
Too few runners in the last 14 days to read — 12 runners, which is not a sample we will draw a conclusion from.
What is J Leroy's Fair A/E?
1.17, from 421 runners with a computed fair probability since 2022. Fair A/E compares actual wins with a margin-stripped market expectation, so 1.00 is par: above it the wins came at bigger prices than the margin-free market implied, below it they did not.
Fair A/E compares wins with a margin-stripped market expectation. Favourite-heavy samples — top yards, leading riders — naturally read a few points warm, so 1.05 means "beat the margin-free market read", not "the market underrates this by 5%". Three sample sizes are reported and never blended: runs (n), the ROI basis (n at SP), and the fair-A/E basis (n with a computed fair probability).

Strike rate is wins over all runs (n). ROI is £1 level stakes at SP over runs with a parseable price (n at SP). Fair A/E is wins over margin-stripped market expectation, over runs with a computed fair probability (n fair). The three Ns can legitimately differ and are always shown. Figures as at 20 October 2026, computed from our own results archive (2005 onwards; aggregates from 2008).