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Jockey profile

Boris Dulong

56 rides in the lifetime window · 35 individual horses
As at 6 Nov 2026 · KTB archive: 2005–present, updated daily
Last ride Mar 2014 100% of rides over jumps
Last 5 seasons Lifetime (2008→)
No rides in the last 5 seasons — showing the lifetime record, from 1 Jan 2008 — the aggregate floor: every horse in the window has a complete captured career behind it.
1–56
Wins / Runs
1.8%
Strike rate
n=56
3 (5%)
Placed
0.37
Fair A/E
n=51 · 0.29 incl. margin
−40.60
£1 level stake
n=54 at SP · −75.2%
£52,389
Prize money (window)
Strike by season
0%
KTB at a glance Claiming: 2.3%

Riding patterns

the angles behind the record · vs 1.8% baseline
First ride on the horse · first captured pairing
0%−1.8
n=35 · A/E 0.00 · £1 −33.00
Last-time-out winners · previous run was a win
0%−1.8
n=2 · A/E 0.00 · £1 −2.00
Fresh horses · 61+ days off
0%−1.8
n=15 · A/E 0.00 · £1 −15.00
When favourite
0%
n=2 · A/E 0.00 · £1 −2.00
Claiming rides · riding with a claim
2.3%+0.5
n=44 · A/E 0.41 · £1 −30.60
Big fields · 14+ runners
0%−1.8
n=29 · A/E 0.00 · £1 −29.00

Each tile is the record in that situation vs the 1.8% baseline — descriptive splits with the sample always shown, for you to weigh. Tiles under 30 runs render muted. First rides are the first captured pairing of horse and rider; last-time-out winners are horses whose previous captured run was a win; claiming rides are runs where the rider carried a weight claim. Group / Graded covers pattern and listed races.

Record by conditions

same window as header

Race type

TypeRWSR£1
Hurdle 37 0 0% −36.00
Chase 19 1 5.3% −4.60

Going

GoingRWSR£1
Soft 36 1 2.8% −21.60
Heavy 18 0 0% −18.00
Good to Soft 1 0 0% −1.00

Courses

CourseRWSR£1
Auteuil (FR) 32 1 3.1% −18.60
Enghien (FR) 19 0 0% −19.00
Lyon Parilly 1 0 0% −1.00
Meslay-Du-Maine 1 0 0% —
Vichy 1 0 0% −1.00
Clairefontaine 1 0 0% —
Le Lion-D'Angers 1 0 0% −1.00

Market position

In the bettingRWSRA/E£1
Favourite 2 0 0% 0.00 −2.00
2nd–3rd fav 10 0 0% 0.00 −10.00
4th–6th fav 4 0 0% 0.00 −4.00
7th+ in betting 38 1 2.6% 1.06 −24.60
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.

Jumping record

completion over obstacles · same window as header
57.1% completed · 56 obstacle rides (chases & hurdles)
CodeRCompFURPUBDOth
Chase 19 63.2% 3 0 4 0 0
Hurdle 37 54.1% 3 0 13 0 1
Chases and hurdles only — bumpers have no obstacles, so completion is not a question there. F fell · UR unseated rider · PU pulled up · BD brought down · Oth covers refusals, slip-ups, run-outs and the rare disqualification. Non-runners are excluded throughout. Rows under n=30 are shown faded. A descriptive record, not a tip.

Horses ridden

same window as header · most-raced first
HorseRWPlLast ran
Galaxy Love (FR) 7 0 0 26 Sep 12
Glenferness (FR) 4 1 1 23 Nov 11
Toscane D'Ainay (FR) 3 0 1 7 Nov 12
Russian Taiga (FR) 3 0 0 21 Oct 11
Mondovi (FR) 2 0 1 23 Mar 14
Viva Tchela (FR) 2 0 0 19 Mar 14
Karlak (FR) 2 0 0 25 Feb 14
Galante D'Authie (FR) 2 0 0 24 Apr 13
Rose Flore (FR) 2 0 0 28 Jun 11
Thomas O'Malley (FR) 2 0 0 29 Apr 11
Marie De Vineuil (FR) 2 0 0 25 Apr 11
Eliot Du Berlais (FR) 2 0 0 13 Apr 11
All 35 horses ridden 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.

By month

strike by month, lifetime
JFMAMJJASOND
·00000000800
A jumps rider: the season runs Oct–Apr. Muted months are small samples (under 30 runs) — read them with the caution they deserve.

Riding for

same window · biggest samples first
TrainerRWSR£1
Robert Collet 29 1 3.4% −14.60
M Rolland 12 0 0% −11.00
F-M Cottin 7 0 0% −7.00
M Seror 2 0 0% −2.00
B De Watrigant 1 0 0% −1.00
R Chotard 1 0 0% −1.00
L Ferard 1 0 0% −1.00
D Bressou 1 0 0% −1.00
Mlle S Sine 1 0 0% −1.00
S Jesus 1 0 0% −1.00
Muted rows are under 30 rides.

Career highlights

lifetime archive, 2007→
2
Archived wins
£66,659
Prize money
2011
Best season · 1 win
This card is the full archive census (2005→); the statistics in the header aggregate from 2008 — the floor that guarantees every horse a complete captured career — so this card can legitimately show more wins than the header.
Korean (FR) — Prix Roger Duchene (Chase) (Handicap) Auteuil (FR) · Sep 2007
£14,270
Glenferness (FR) — Prix De Salers (Chase) (Claimer) (5yo+) (Turf) Auteuil (FR) · Oct 2011
£9,103
Notable horses
Glenferness (FR) Korean (FR)

Sires of the horses ridden

progeny record · win % by ground and trip
Laveron (GB) 0% · 0–7
Progeny have won 10.2% of 1,171 runs since 2008 (142 horses). Strongest on Good to Soft going: 14.9% from 161. Weakest on Soft going: 6.9% from 477.
Turgeon (USA) 0% · 0–7
Progeny have won 12.3% of 3,189 runs since 2008 (341 horses). Weakest beyond 3m (all codes): 7.8% from 268.
Great Pretender (IRE) 0% · 0–6
Progeny have won 13.1% of 3,551 runs since 2010 (410 horses). Strongest over 1m5f – 2m (all codes): 16.5% from 728. Weakest over 1m2f – 1m4f (all codes): 6.6% from 151.
Michel Georges (GB) 25% · 1–4
Progeny have won 12.4% of 266 runs since 2008 (30 horses).
Nononito (FR) 0% · 0–3
Progeny have won 8.1% of 247 runs since 2008 (42 horses).
Westerner (GB) 0% · 0–3
Progeny have won 12.2% of 11,858 runs since 2009 (945 horses). Weakest on Standard (AW) going: 8.5% from 188.
Top line: the rider'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 6 Nov 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 57 · newest first

The latest 50 of 57 archived rides, newest first. The full record runs from 26 September 2007 to 23 March 2014.

DateCourseHorseRaceFinishSP
23 Mar 14 Auteuil (FR) Mondovi (FR)T: M Rolland Prix Alain Grimaux (Hurdle) (Handicap) (4-5yo Fillies & Mares) (Turf)18f · Very Soft · 16 ran PU 19/5
19 Mar 14 Enghien (FR) Viva Tchela (FR)T: M Rolland Prix La Nouba (Chase) (Conditions) (4-5yo Fillies & Mares) (Turf)17f · Very Soft · 11 ran F 197/10
09 Mar 14 Auteuil (FR) Super Du Wal (FR)T: S Jesus Prix Rabastens (Hurdle) (Claimer) (5yo+) (Turf)18f · Heavy · 16 ran 12th 128/1
02 Mar 14 Auteuil (FR) Victory Lap (FR)T: M Rolland Prix Rivoli (Chase) (Conditions) (5yo Non-Thoroughbreds) (Turf)17.5f · Heavy · 10 ran 6th 161/10
25 Feb 14 Enghien (FR) Karlak (FR)T: M Rolland Prix Bougie (Hurdle) (Handicap) (5yo+) (Turf)19f · Heavy · 19 ran 9th 19/1
25 Feb 14 Enghien (FR) Mondovi (FR)T: M Rolland Prix Marise (Hurdle) (Conditions) (4yo Fillies) (Turf)21.5f · Heavy · 12 ran 2nd 5/1
29 Nov 13 Auteuil (FR) Brasero (FR)T: D Bressou Prix Barcelonnette (Hurdle) (Claimer) (5yo+) (Turf)18f · Heavy · 14 ran 6th 58/10
10 Nov 13 Meslay-Du-Maine Volare (FR)T: M Rolland Prix DAntal Cidas (Chase) (4yo)17.5f · 3 ran 3rd —
09 Oct 13 Lyon Parilly Bel Ame (FR)T: Mlle S Sine Prix du Mont Revard (Hurdle)19f · Soft · 5 ran 5th 15/1
12 Sep 13 Auteuil (FR) Astigos (FR)T: M Rolland Prix Chakhansoor (Hurdle) (Handicap) (5yo+) (Turf)19.5f · Very Soft · 15 ran PU 14/1
01 Aug 13 Vichy Karlak (FR)T: M Rolland Prix dAvenches (Hurdle)19.5f · Soft · 3 ran 3rd 15/1
24 Jun 13 Le Lion-D'Angers Viva Tchela (FR)T: M Rolland Prix Dominique De Broglie (Fillies) (Hurdle)18.5f · Good To Soft · 3 ran 2nd 10/1
17 Jun 13 Auteuil (FR) Katkolys (FR)T: M Rolland Prix Le Bouif (Chase) (Claimer) (5yo+) (Turf)18f · Very Soft · 8 ran 5th 9/1
24 Apr 13 Auteuil (FR) Galante D'Authie (FR)T: M Rolland Prix Valmajour (Hurdle) (Claimer) (5yo+) (Turf)17.5f · Very Soft · 14 ran 9th 14/1
10 Apr 13 Auteuil (FR) Galante D'Authie (FR)T: M Rolland Prix Le Hon (Hurdle) (Claimer) (5yo+) (Turf)18f · Heavy · 11 ran 5th 16/1
25 Nov 12 Auteuil (FR) Kaldoun's Isle (FR)T: Robert Collet Prix Cap (Hurdle) (Claimer) (3yo) (Turf)17.5f · Heavy · 12 ran 4th 17/2
14 Nov 12 Enghien (FR) Zuleika (FR)T: F-M Cottin Prix Bison Fute (Chase) (Claimer) (4yo) (Turf)17.5f · Heavy · 14 ran PU 44/1
14 Nov 12 Enghien (FR) Ultra Bleue (FR)T: F-M Cottin Prix De La Croix Dauphine (Hurdle) (Claimer) (4yo Fillies) (Turf)18f · Heavy · 19 ran 4th 82/1
07 Nov 12 Enghien (FR) Toscane D'Ainay (FR)T: F-M Cottin Prix De Pithiviers (Chase) (Claimer) (5yo+) (Turf)19f · Heavy · 12 ran 2nd 69/1
03 Nov 12 Auteuil (FR) Ma Pretention (FR)T: Robert Collet Prix De Pornic (Hurdle) (Claimer) (4yo) (Turf)18f · Heavy · 15 ran PU 24/1

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 Boris Dulong's strike rate?
Boris Dulong has won 1 of 56 rides since 2008, a strike rate of 1.8% (as at 6 November 2026). Figures are computed from our own results archive.
Which course does Boris Dulong do best at?
Auteuil (FR) by strike rate: 1 wins from 32 rides (3.1%) since 2008. Read from the 15 courses with the most rides 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.
What is Boris Dulong's Fair A/E?
0.37, from 51 rides with a computed fair probability since 2008. 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 6 November 2026, computed from our own results archive (2005 onwards; aggregates from 2008).