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Jockey profile

Ervan Chazelle

896 rides in the lifetime window · 407 individual horses
As at 6 Nov 2026 · KTB archive: 2005–present, updated daily
Last ride May 2019 99% 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.
67–896
Wins / Runs
7.5%
Strike rate
n=896
193 (22%)
Placed
1.08
Fair A/E
n=793 · 0.95 incl. margin
−15.50
£1 level stake
n=831 at SP · −1.9%
£4.33m
Prize money (window)
Strike by season
10%
KTB Rider Profile

Rode around 70 times a season, almost all over hurdles and fences, winning on 8% of them — beating the margin-free market read across the lifetime window (Fair A/E 1.08). Riding last-time-out winners the record reads 11% (65 rides).

Deterministic profile computed from 896 archived runs (lifetime window) · updated 6 Nov 2026
KTB at a glance Fresh horses: 9.3% 28.3% when favourite Robert Collet: 6.9% from 216 First rides: 7.7% LTO winners: 10.8% Rode the favourite in 5% of races
The read

Rides on last-time-out winners have been a positive signal at 10.8% (n=65, Fair A/E 0.97). Horses returning fresh after 61+ days are the standout value angle: 9.3% strikes only just above baseline, but Fair A/E 1.61 and +44.40 to a £1 stake over 279 rides — a record the market has persistently underpriced. The market has consistently overbet in Group and Graded company the record: 4.6% strike, Fair A/E 0.75 and −100.30 to a £1 stake over 261 rides — those runners underperformed what the price implied. Robert Collet supplied 24% of the rides and matches the rider's average almost exactly (6.9%, A/E 1.10) — the partnership beats the margin-free market read. The rider also read well off a 61-180-day break (11.2%, n=187). The market has consistently overbet the rider in Class 1: Fair A/E 0.75 across 261 rides (4.6% strike, −100.30 to a £1 stake) — runners there underperformed what the price implied. 13 Group and Graded wins sit in the archive record — the biggest prize the rider has landed: the Gras Savoye Hipcover Prix La Barka at Auteuil (FR) (May 2010, £69,690). The standout partner of the record was Le Chateau (FR) — 5 wins from 32 rides together.

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

Riding patterns

the angles behind the record · vs 7.5% baseline
First ride on the horse · first captured pairing
7.7%+0.2
n=404 · A/E 1.43 · £1 +51.10
Last-time-out winners · previous run was a win
10.8%+3.3
n=65 · A/E 0.97 · £1 −27.50
Fresh horses · 61+ days off
9.3%+1.8
n=279 · A/E 1.61 · £1 +44.40
When favourite
28.3%
n=46 · A/E 1.28 · £1 +7.70
Big fields · 14+ runners
7.4%−0.1
n=323 · A/E 1.36 · £1 +94.70
Group / Graded races · pattern & listed
4.6%−2.9
n=261 · A/E 0.75 · £1 −100.30

Each tile is the record in that situation vs the 7.5% 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.

Notable angles

vs their own baseline
With Louis Baudron 15.9% vs 7.5% · n=44
With first-time headgear 13.2% vs 7.5% · n=38
Off a 61-180-day break 11.2% vs 7.5% · n=187
In Class 1 4.6% vs 7.5% · n=261
In Group / Graded races 4.6% vs 7.5% · n=261
With J-L Pelletan 3% vs 7.5% · n=33
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

Race type

TypeRWSR£1
Hurdle 660 55 8.3% +40.40
Chase 229 12 5.2% −49.90
Flat 7 0 0% −6.00

Going

GoingRWSR£1
Soft 608 48 7.9% −19.80
Heavy 272 16 5.9% −2.10
Good to Soft 7 1 14.3% −0.40
Good 7 2 28.6% +6.80
Standard (AW) 2 0 0% —

Courses

CourseRWSR£1
Auteuil (FR) 593 39 6.6% −76.80
Enghien (FR) 220 17 7.7% −40.50
Compiegne 37 3 8.1% +13.30
Pau 8 1 12.5% +74.00
Cagnes-Sur-Mer 7 0 0% −6.00
Lyon Parilly 5 2 40% +4.90
Clairefontaine 5 2 40% +11.40
Dieppe 3 1 33.3% +4.50
Fontainebleau 3 1 33.3% +4.70
Vichy 3 0 0% −3.00
Argentan 2 0 0% −1.00
Le Touquet 1 0 0% —
Dax 1 0 0% −1.00
Angers 1 1 100% +5.00
Toulouse 1 0 0% −1.00

Class

ClassRWSR£1
Class 1 261 12 4.6% −100.30

Market position

In the bettingRWSRA/E£1
Favourite 48 13 27.1% 1.22 +5.70
2nd–3rd fav 106 14 13.2% 0.70 −24.20
4th–6th fav 244 22 9% 1.27 +10.10
7th+ in betting 433 14 3.2% 1.11 −7.10
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
76.2% completed · 889 obstacle rides (chases & hurdles)
CodeRCompFURPUBDOth
Chase 229 74.7% 25 0 30 0 3
Hurdle 660 76.7% 32 0 108 0 14
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
Le Chateau (FR) 32 5 7 27 Apr 19
Cobra De Larre (FR) 20 3 8 10 Oct 18
L'Espiguette (FR) 15 1 2 6 Mar 17
Rasique (FR) 12 2 6 22 Nov 15
Idol's Lad (FR) 12 1 4 9 Nov 14
Password (FR) 11 1 3 25 Jun 15
Elixir Du Berlais (FR) 11 2 4 25 Apr 14
Diamond Charm (FR) 9 1 4 25 Nov 18
Flapjack (FR) 9 0 2 12 Nov 17
Linda's Charm (FR) 9 0 3 22 Jun 15
Zarkali (FR) 9 0 1 18 Jun 11
Victoria Princess (FR) 8 2 4 4 May 14
Showing the 60 most-raced of the 407 horses ridden in this window — each ran at least 4 times. Horses with fewer runs aren't listed; search finds any horse since 2005. 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
1422787100119660
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
Main yardRobert Collet
24% of all rides
6.9% SR · A/E 1.10
TrainerRWSR£1
Robert Collet 216 15 6.9% +1.00
C Scandella 159 16 10.1% +24.90
Mlle T Puitg 98 7 7.1% +6.50
Louis Baudron 44 7 15.9% +48.10
J-L Pelletan 33 1 3% −18.70
Muted rows are under 30 rides and sit behind "Show all".

Career highlights

lifetime archive, 2005→
75
Archived wins
13
Pattern / graded wins
£4.66m
Prize money
2010
Best season · 13 wins
In our archive from its very first year (2005), so this career almost certainly began earlier than our record does. The figures above count 2005 onwards only — what the archive holds, not a full-career total. 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.
Young Poli (FR) — Gras Savoye Hipcover Prix La Barka (Hurdle) (5yo+) (Turf) Auteuil (FR) · May 2010 · Grade 2
£69,690
Yankee Hill (FR) — Prix Pierre De Lassus (Hurdle) (4yo) (Turf) Auteuil (FR) · Oct 2013 · Grade 3
£49,390
Doumaja (FR) — Prix Morgex (Chase) Auteuil (FR) · Nov 2006 · Grade 3
£46,552
Notable horses
Le Chateau (FR) Cobra De Larre (FR) Young Poli (FR) Rasique (FR) Elixir Du Berlais (FR) Victoria Princess (FR)

Sires of the horses ridden

progeny record · win % by ground and trip
Enrique (GB) 16.4% · 9–55
Progeny have won 10.7% of 2,601 runs since 2008 (289 horses). Weakest on Standard (AW) going: 4.9% from 370. Strongest over 1m5f – 2m (all codes): 15.8% from 462. Weakest over 1m – 1m1f (all codes): 6.6% from 347.
Linda's Lad (GB) 2% · 1–50
Progeny have won 8.2% of 1,323 runs since 2012 (186 horses). Strongest over 2m5f – 3m (all codes): 11.6% from 215.
Poliglote (GB) 14.3% · 6–42
Progeny have won 15.6% of 4,224 runs since 2008 (417 horses). Weakest on Standard (AW) going: 6.8% from 234. Strongest over 1m5f – 2m (all codes): 19% from 691. Weakest over 1m – 1m1f (all codes): 6.1% from 196.
Muhtathir (GB) 12.5% · 3–24
Progeny have won 11.3% of 4,719 runs since 2008 (494 horses). Weakest on Standard (AW) going: 7.9% from 967.
Discover D'Auteuil (FR) 18.2% · 4–22
Progeny have won 10.2% of 954 runs since 2008 (87 horses). Strongest on Good to Soft going: 18.4% from 103. Weakest on Soft going: 7.1% from 408. Strongest over 1m5f – 2m (all codes): 13.3% from 195.
Martaline (GB) 19% · 4–21
Progeny have won 14.2% of 7,347 runs since 2008 (723 horses). Weakest on Standard (AW) going: 9.4% from 128. Weakest over 1m – 1m1f (all codes): 10% from 120.
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 933 · newest first

The latest 50 of 933 archived rides, newest first. The full record runs from 9 January 2005 to 12 May 2019.

DateCourseHorseRaceFinishSP
12 May 19 Dieppe Aberwind (FR)T: Louis Baudron Prix Du Buissonnet (Hurdle) (Turf)16f · Very Soft · 13 ran 9th 25/1
27 Apr 19 Auteuil (FR) Manouka (FR)T: Mlle B Renk Prix des Charentes (Hurdle) (Conditions) (4-5yo Fillies & Mares) (Turf)18f · Very Soft · 10 ran 6th 23/1
27 Apr 19 Auteuil (FR) Le Chateau (FR)T: C Scandella Grande Course de Haies de Printemps (Hurdle) Handicap) (5yo+) (Turf)21.5f · Very Soft · 20 ran PU 58/1
27 Apr 19 Auteuil (FR) Straigt Destiny (FR)T: C Scandella Prix Girofla (Hurdle) () (3yo Fillies) (Turf)15f · Very Soft · 8 ran PU 39/1
25 Apr 19 Compiegne (FR) Happy Maia (FR)T: J-P Dubois Prix Gaston Branere (Hurdle) (Listed Handicap) (4yo) (Turf)18f · Very Soft · 16 ran 10th 53/1
11 Apr 19 Auteuil (FR) Le Chateau (FR)T: C Scandella Prix Rose Or No (Hurdle) (Listed Handicap) (5yo+) (Turf)19.5f · Very Soft · 18 ran PU 32/1
02 Apr 19 Compiegne (FR) Manouka (FR)T: Mlle B Renk Prix Robert Fournier Sarloveze (Hurdle) (Handicap) (5yo+) (Turf)18f · Very Soft · 18 ran 1st 187/10
02 Apr 19 Compiegne (FR) Staking (FR)T: Joel Phelippon Prix Orvilliers (Div 1) (Hurdle) (Conditions) (4yo) (Turf)18f · Very Soft · 13 ran 8th 14/1
24 Mar 19 Auteuil (FR) Titi De Montmartre (FR)T: Robert Collet Prix Hypothese (Hurdle) (5yo+) (Turf)19.5f · Very Soft · 8 ran 6th 27/1
16 Mar 19 Auteuil (FR) Straigt Destiny (FR)T: C Scandella Prix Auricula (Hurdle) (Conditions) (3yo Fillies Unraced Over Obstacles) (Turf)15f · Heavy · 11 ran PU 109/10
25 Nov 18 Auteuil (FR) Le Chateau (FR)T: C Scandella Prix Leon Olry-Roederer (Hurdle) (5yo+) (Turf)21.5f · Heavy · 13 ran PU 81/1
25 Nov 18 Auteuil (FR) Diamond Charm (FR)T: J-P Dubois Prix Jean Laumain (Chase) (Handicap) (5yo+) (Turf)22f · Heavy · 17 ran 8th 10/1
21 Nov 18 Auteuil (FR) Bacara Des Bois (FR)T: Mme Stephanie Jaffrelot-Bedon Prix Jean Sens (Hurdle) (Conditions) (5yo+ Mares) (Turf)19.5f · Heavy · 13 ran 7th 21/1
17 Nov 18 Auteuil (FR) Kallipso (FR)T: A Junk Prix Leopold Bara (Hurdle) (Conditions) (4yo Fillies) (Turf)18f · Heavy · 6 ran 5th 32/1
11 Nov 18 Auteuil (FR) Moody Mary (FR)T: Robert Collet Prix Tournay (Hurdle) (Handicap) (4yo) (Turf)19.5f · Heavy · 9 ran 5th 3/1F
11 Nov 18 Auteuil (FR) Make A Dream (FR)T: J-P Dubois Prix de Beaugency (Hurdle) (Conditions) (3yo) (Turf)17.5f · Heavy · 10 ran F 18/1
09 Nov 18 Compiegne (FR) Ever Falco (FR)T: C Scandella Prix Styrax (Hurdle) (Claimer) (4yo) (Turf)18f · Very Soft · 9 ran F 19/1
04 Nov 18 Auteuil (FR) Asdesmar (FR)T: E Leray Prix Mondeville (Hurdle) (Handicap) (5yo+) (Turf)18f · Very Soft · 13 ran PU 59/1
04 Nov 18 Auteuil (FR) Argentier (FR)T: E Leray Prix Count Schomberg (Hurdle) (Listed Handicap) (5yo+) (Turf)18f · Very Soft · 16 ran PU 45/1
03 Nov 18 Auteuil (FR) Le Chateau (FR)T: C Scandella Grand Prix d'Automne (Hurdle) (5yo+) (Turf)24f · Very Soft · 9 ran 8th 31/1

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 Ervan Chazelle's strike rate?
Ervan Chazelle has won 67 of 896 rides since 2008, a strike rate of 7.5% (as at 6 November 2026). Figures are computed from our own results archive.
Which course does Ervan Chazelle do best at?
Compiegne by strike rate: 3 wins from 37 rides (8.1%) 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.
Which yard does Ervan Chazelle ride most for?
Robert Collet, with 216 rides since 2008 — 24% of the total. That pairing has won 15 (6.9%).
What is Ervan Chazelle's Fair A/E?
1.08, from 793 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).