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Jockey profile

Flavien Masse

216 rides in the lifetime window · 172 individual horses
As at 6 Nov 2026 · KTB archive: 2005–present, updated daily
Last ride Oct 2021
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.
4–216
Wins / Runs
1.9%
Strike rate
n=216
16 (7%)
Placed
0.31
n=207 · 0.47 incl. margin
−175.10
£1 level stake
n=213 at SP · −82.2%
£107k
Prize money (window)
Strike by season
0%
KTB Rider Profile

Rode around 20 times a season, winning on 2% of them — a touch below the margin-free market read across the lifetime window (Fair A/E 0.31).

Deterministic profile computed from 216 archived runs (lifetime window) · updated 6 Nov 2026
KTB at a glance Fresh horses: 2%
The read

The market has consistently overbet claiming rides: 0.6% strike, Fair A/E 0.21 and −138.80 to a £1 stake over 154 rides — those runners underperformed what the price implied. The rider also read well off a 8-14-day break (6.7%, n=30) and over 1m2f – 1m4f (5.3%, n=38). The market has consistently overbet the rider off a 15-30-day break: Fair A/E 0.00 across 53 rides (0% strike, −52.00 to a £1 stake) — runners there underperformed what the price implied.

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

Riding patterns

the angles behind the record · vs 1.9% baseline
First ride on the horse · first captured pairing
1.7%−0.2
n=172 · A/E 0.37 · £1 −133.40
Last-time-out winners · previous run was a win
0%−1.9
n=4 · A/E 0.00 · £1 −4.00
Fresh horses · 61+ days off
2%+0.1
n=50 · A/E 0.00 · £1 −40.60
When favourite
50%
n=4 · A/E 0.00 · £1 +7.70
Claiming rides · riding with a claim
0.6%−1.3
n=154 · A/E 0.21 · £1 −138.80
Big fields · 14+ runners
1%−0.9
n=105 · A/E 0.39 · £1 −94.00
Group / Graded races · pattern & listed
0%−1.9
n=2 · A/E 0.00 · £1 −2.00

Each tile is the record in that situation vs the 1.9% 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
Off a 8-14-day break 6.7% vs 1.9% · n=30
Over 1m2f – 1m4f 5.3% vs 1.9% · n=38
Off a 15-30-day break 0% vs 1.9% · n=53 · A/E 0.00
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
Flat 171 4 2.3% −130.10
Hurdle 39 0 0% −39.00
Chase 6 0 0% −6.00

Going

GoingRWSR£1
Standard (AW) 81 1 1.2% −65.80
Soft 63 1 1.6% −52.60
Good 29 0 0% −29.00
Heavy 27 1 3.7% −16.00
Good to Soft 16 1 6.3% −11.70

Courses

CourseRWSR£1
Deauville (FR) 52 1 1.9% −36.80
Chantilly (FR) 44 0 0% −44.00
Saint-Cloud (FR) 31 1 3.2% −20.00
Auteuil (FR) 27 0 0% −27.00
Maisons-Laffitte (FR) 24 0 0% −24.00
Enghien (FR) 14 0 0% −14.00
Longchamp (FR) 7 0 0% −7.00
Compiegne 6 0 0% −6.00
Saint-Brieuc 2 0 0% −2.00
Le Croise-Laroche 2 0 0% −1.00
Fontainebleau 1 1 100% +8.40
Le Touquet (FR) 1 0 0% —
Clairefontaine (FR) 1 0 0% −1.00
Evreux 1 0 0% −1.00
Morlaix (FR) 1 0 0% —

Class

ClassRWSR£1
Class 1 2 0 0% −2.00

Market position

In the bettingRWSRA/E£1
Favourite 4 2 50% 0.00 +7.70
2nd–3rd fav 9 0 0% 0.00 −9.00
4th–6th fav 27 2 7.4% 1.02 −0.80
7th+ in betting 173 0 0% 0.00 −173.00
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 ridden

same window as header · most-raced first
HorseRWPlLast ran
Dihna (FR) 5 0 0 6 Jul 15
Koro (FR) 5 0 1 5 Jul 12
Line Dancer (FR) 4 0 0 27 Nov 11
Merlin Woods (FR) 3 0 1 27 Jun 17
Golden Drop (FR) 3 0 0 24 Mar 16
My Tendresse (FR) 3 0 0 21 Dec 11
Sun April Speed (FR) 3 0 0 15 Apr 11
Chichi Saron (FR) 3 0 0 9 Nov 10
If I Say So (GB) 2 0 0 26 May 18
Dawn Salute (FR) 2 0 0 2 Nov 17
April Sunday (FR) 2 0 0 27 Sep 17
Springtime Love (FR) 2 0 0 26 Feb 16
Showing the 60 most-raced of the 172 horses ridden in this window — each ran at least 1 time. 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
000500800054
A flat rider: the season runs Mar–Oct. Muted months are small samples (under 30 runs) — read them with the caution they deserve.

Riding for

same window · biggest samples first
Main yardR Caget
20% of all rides
0% SR · A/E 0.00
TrainerRWSR£1
R Caget 43 0 0% −43.00
Muted rows are under 30 rides and sit behind "Show all".

Career highlights

lifetime archive, 2010→
4
Archived wins
£107k
Prize money
2014
Best season · 2 wins
Eyrton (GB) — Prix Fairy Legend (Maiden) (3yo) (Turf) Saint-Cloud (FR) · Nov 2014
£10,417
Mocklershill (FR) — Prix de Roiville (Conditions) (3yo) (Young Jockeys & Apprentices) (Polytrack) Deauville (FR) · Dec 2015
£9,302
Kaldera (GER) — Prix Des Sentiers Denecourt (3yo) (Turf) Fontainebleau · Apr 2014
£7,917

Sires of the horses ridden

progeny record · win % by ground and trip
Dalakhani (IRE) 0% · 0–6
Progeny have won 11.6% of 5,037 runs since 2008 (497 horses). Weakest on Heavy going: 8.6% from 278. Weakest over 2m5f – 3m (all codes): 6.5% from 153.
Bleu D'Altair (FR) 0% · 0–5
Progeny have won 9.3% of 54 runs since 2008 (8 horses).
Fuisse (FR) 0% · 0–5
Progeny have won 11.5% of 1,117 runs since 2014 (123 horses). Weakest over 1m2f – 1m4f (all codes): 5% from 119.
Vatori (FR) 0% · 0–5
Progeny have won 7.3% of 905 runs since 2010 (89 horses).
Youmzain (IRE) 0% · 0–5
Progeny have won 8.7% of 1,743 runs since 2014 (211 horses). Weakest on Good to Soft going: 5.7% from 265.
Chichicastenango (FR) 0% · 0–4
Progeny have won 11.7% of 728 runs since 2008 (103 horses). Strongest on Soft going: 14.9% from 174. Weakest on Standard (AW) going: 7.8% from 219. Weakest over 6f – 7f (all codes): 7.1% from 112.
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 216 · newest first

The latest 50 of 216 archived rides, newest first. The full record runs from 15 July 2010 to 30 October 2021.

DateCourseHorseRaceFinishSP

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 Flavien Masse's strike rate?
Flavien Masse has won 4 of 216 rides since 2008, a strike rate of 1.9% (as at 6 November 2026). Figures are computed from our own results archive.
Which course does Flavien Masse do best at?
Saint-Cloud (FR) by strike rate: 1 wins from 31 rides (3.2%) 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 Flavien Masse's Fair A/E?
0.31, from 207 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).