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Jockey profile

Jamie Spencer

9,305 rides in the lifetime window · 5,034 individual horses
As at 14 Nov 2026 · KTB archive: 2005–present, updated daily
Last ride 50 days ago 100% of rides on the flat
from 1 Jan 2008 — the aggregate floor: every horse in the window has a complete captured career behind it
1,395–9,305
Wins / Runs
15%
Strike rate
n=9,305
3,428 (37%)
Placed
0.98
n=9,268 · 0.85 incl. margin
−1,757.76
£1 level stake
n=9,305 at SP · −18.9%
£30.5m
Prize money (window)
Strike by season
11.6%
KTB Rider Profile

Rides around 490 times a season, almost all on the flat, winning on 15% of them — level with the margin-free market read across the lifetime window (Fair A/E 0.98). Riding last-time-out winners the record reads 18% (1,410 rides).

Deterministic profile computed from 9,305 archived runs (lifetime window) · updated 14 Nov 2026
KTB at a glance Fires Nov–Mar 34.5% when favourite David Simcock: 18.2% from 1,167 LTO winners: 17.7% Rides the favourite in 19% of races
The read

The record is strongest at Southwell (AW) (27%, n=159) and Redcar (28.6%, n=49) — all clear of the rider's 15% baseline. Rides in big fields of 14 or more have been a poor signal at 8.1% (n=1,796, Fair A/E 1.01). The market has consistently overbet in Group and Graded company the record: 9.2% strike, Fair A/E 0.85 and −243.13 to a £1 stake over 1,460 rides — those runners underperform what the price implies. David Simcock supplies 13% of the rides and edges the rider's average (18.2% vs 15%, A/E 1.09) — the partnership beats the margin-free market read. The rider also reads well on Firm going (27.4%, n=62). The record reads poorly over 2m1f – 2m4f — 5.1% over 79 rides, 9.9pts below the baseline. 193 Group and Graded wins sit in the archive record — the biggest prize the rider has landed: the Queen Elizabeth II Jubilee Stakes at Ascot (Jun 2023, £567,100). The standout partner of the record: Boz (GB) — 8 wins from 15 rides together. Seasonally, the rider fires Nov–Mar.

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

Riding patterns

the angles behind the record · vs 15% baseline
First ride on the horse · first captured pairing
13.9%−1.1
n=4,865 · A/E 0.96 · £1 −902.15
Last-time-out winners · previous run was a win
17.7%+2.7
n=1,410 · A/E 0.94 · £1 −304.86
Fresh horses · 61+ days off
14.2%−0.8
n=1,637 · A/E 0.96 · £1 −318.87
When favourite
34.5%
n=1,754 · A/E 1.03 · £1 −185.71
Big fields · 14+ runners
8.1%−6.9
n=1,796 · A/E 1.01 · £1 −114.23
Group / Graded races · pattern & listed
9.2%−5.8
n=1,460 · A/E 0.85 · £1 −243.13

Each tile is the record in that situation vs the 15% 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
At Southwell (AW) 27% vs 15% · n=159
At Redcar 28.6% vs 15% · n=49
On Firm going 27.4% vs 15% · n=62
With David O'Meara 4.9% vs 15% · n=82
Over 2m1f – 2m4f 5.1% vs 15% · n=79
In Group / Graded races 9.2% vs 15% · n=1,460
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 9,302 1395 15% −1,754.76
Chase 1 0 0% −1.00
Hurdle 1 0 0% −1.00
NH Flat 1 0 0% −1.00

Going

GoingRWSR£1
Standard (AW) 2,785 525 18.9% −532.75
Good to Firm 2,461 348 14.1% −401.01
Good 1,984 241 12.1% −372.33
Good to Soft 1,051 133 12.7% −263.06
Soft 832 110 13.2% −222.65
Heavy 130 21 16.2% +18.24
Firm 62 17 27.4% +15.80

Courses

CourseRWSR£1
Kempton (AW) 835 134 16% −128.90
Lingfield (AW) 688 131 19% −81.14
Ascot 654 66 10.1% +146.29
Wolverhampton (AW) 650 129 19.8% −180.18
Newmarket 580 49 8.4% −167.14
Yarmouth 537 101 18.8% −26.95
Doncaster 495 82 16.6% +42.54
Newbury 421 44 10.5% −118.99
Newmarket 415 45 10.8% −134.12
York 380 39 10.3% −100.03
Goodwood 351 40 11.4% −61.64
Windsor 334 50 15% −74.81
Chelmsford (AW) 326 61 18.7% −113.51
Haydock 315 46 14.6% −88.39
Sandown 253 29 11.5% −92.21

Class

ClassRWSR£1
Class 5 2,364 451 19.1% −527.60
Class 4 2,035 289 14.2% −580.92
Class 1 1,459 135 9.3% −242.13
Class 2 1,387 151 10.9% −169.93
Class 6 1,013 198 19.5% −219.71
Class 3 970 163 16.8% +16.03
Class 7 28 6 21.4% +2.50

Market position

In the bettingRWSRA/E£1
Favourite 2,029 675 33.3% 1.04 −173.92
2nd–3rd fav 2,827 458 16.2% 0.96 −514.04
4th–6th fav 2,672 193 7.2% 0.85 −843.80
7th+ in betting 1,777 69 3.9% 0.98 −226.00
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
Bless Him (IRE) 26 6 9 23 Oct 24
Glory Awaits (IRE) 18 1 4 3 Aug 18
Wigmore Hall (IRE) 18 3 7 29 Jul 14
Masamah (IRE) 15 2 9 7 May 14
Horsted Keynes (FR) 14 2 8 25 Jul 18
Arisaig (GB) 13 1 3 25 Sep 26
Cash (IRE) 13 1 5 13 Jun 26
Dragon Mall (USA) 13 2 5 16 Feb 18
Buckstay (IRE) 13 3 5 15 Jul 17
Gramercy (IRE) 13 2 4 25 Aug 14
Parisian Pyramid (IRE) 13 0 5 8 Feb 14
Jakajaro (IRE) 12 2 5 22 Sep 26
Showing the 60 most-raced of the 5,034 horses ridden in this window — each ran at least 9 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
221922141512161613111821
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 yardDavid Simcock
13% of all rides
18.2% SR · A/E 1.09
TrainerRWSR£1
David Simcock 1,167 212 18.2% −160.41
Michael Bell 907 143 15.8% −229.67
Kevin Ryan 621 92 14.8% −103.69
Luca Cumani 298 60 20.1% −12.47
Charles Hills 246 27 11% +46.11
Brian Meehan 241 30 12.4% −119.75
Paul Cole 171 23 13.5% −56.01
Ian Williams 170 35 20.6% +0.86
Peter Chapple-Hyam 161 26 16.1% +1.09
Richard Fahey 161 26 16.1% +191.14
James Fanshawe 154 24 15.6% −39.08
Jamie Osborne 144 30 20.8% −5.23
Muted rows are under 30 rides.

Career highlights

lifetime archive, 2005→
1,953
Archived wins
193
Pattern / graded wins
£40.0m
Prize money
2007
Best season · 208 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.
Khaadem (IRE) — Queen Elizabeth II Jubilee Stakes (Group 1) (British Champions Series) Ascot · Jun 2023 · Group 1
£567,100
Powerful Glory (IRE) — Qipco British Champions Sprint Stakes (Group 1) Ascot · Oct 2025 · Group 1
£318,994
Sariska (GB) — Darley Irish Oaks (group 1) Curragh · Jul 2009 · Group 1
£280,500

Sires of the horses ridden

progeny record · win % by ground and trip
Exceed and Excel (AUS) 18.4% · 34–185
Progeny have won 11.9% of 16,040 runs since 2008 (1,161 horses). Strongest on Firm going: 20.7% from 198. Weakest on Soft going: 7.9% from 1,194.
Oasis Dream (GB) 15.3% · 28–183
Progeny have won 11.7% of 18,052 runs since 2008 (1,511 horses). Strongest on Firm going: 17.3% from 150. Weakest on Heavy going: 8.5% from 485. Weakest over 1m5f – 2m (all codes): 7.1% from 792.
Invincible Spirit (IRE) 15.3% · 27–176
Progeny have won 11.9% of 20,875 runs since 2008 (1,574 horses). Strongest on Firm going: 16.1% from 161. Weakest over 1m5f – 2m (all codes): 7.8% from 844.
Galileo (IRE) 10% · 16–160
Progeny have won 14.5% of 18,201 runs since 2008 (1,776 horses). Strongest over 6f – 7f (all codes): 18.2% from 1,383. Weakest over 2m5f – 3m (all codes): 9.4% from 890.
Pivotal (GB) 21.3% · 33–155
Progeny have won 13.6% of 12,790 runs since 2008 (1,019 horses). Weakest over 2m5f – 3m (all codes): 7.4% from 108.
Danehill Dancer (IRE) 20% · 28–140
Progeny have won 11.2% of 10,094 runs since 2008 (783 horses). Weakest over 2m5f – 3m (all codes): 6.2% from 130.
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 14 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 12,466 · newest first

The latest 50 of 12,466 archived rides, newest first. The full record runs from 9 February 2005 to 25 September 2026.

DateCourseHorseRaceFinishSP
19 Sep 26 Newbury Witch Hunter (FR)T: Richard Hannon Conundrum Consulting Handicap StakesClass 3 · 7f · Good To Firm · 16 ran 14th 11/1
10 Sep 26 Longchamp (FR) Midak (FR)T: Ian Williams Prix GladiateurClass 1 · 15.5f · Good To Soft · 8 ran 5th 100/30
29 Aug 26 Sandown Kodiac City (IRE)T: Richard Hughes Betmgm Solario Stakes (Group 3)Class 1 · 7f · Good To Soft · 8 ran 6th 22/1
29 Aug 26 Sandown Cap Santa Lucia (FR)T: Brian Meehan Betmgm Atalanta Stakes (Group 3)Class 1 · 8f · Good To Soft · 10 ran 8th 80/1
22 Aug 26 York Point Lynas (IRE)T: Edward Bethell Sky Bet Strensall Stakes (Group 3)Class 1 · 9f · Good To Soft · 11 ran 11th 28/1

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 Jamie Spencer's strike rate?
Jamie Spencer has won 1,395 of 9,305 rides since 2008, a strike rate of 15% (as at 14 November 2026). Figures are computed from our own results archive.
Which course does Jamie Spencer do best at?
Wolverhampton (AW) by strike rate: 129 wins from 650 rides (19.8%) 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 Jamie Spencer ride most for?
David Simcock, with 1,167 rides since 2008 — 13% of the total. That pairing has won 212 (18.2%).
What is Jamie Spencer's Fair A/E?
0.98, from 9,268 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 14 November 2026, computed from our own results archive (2005 onwards; aggregates from 2008).