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Jockey profile

William Cox

2,396 rides in the lifetime window · 1,267 individual horses
As at 13 Nov 2026 · KTB archive: 2005–present, updated daily
Last ride 10 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
128–2,396
Wins / Runs
5.3%
Strike rate
n=2,396
419 (18%)
Placed
0.85
n=2,383 · 0.72 incl. margin
−1,164.85
£1 level stake
n=2,396 at SP · −48.6%
£1.42m
Prize money (window)
Strike by season
2.8%
KTB Rider Profile

Rides around 130 times a season, almost all on the flat, winning on 5% of them — a touch below the margin-free market read across the lifetime window (Fair A/E 0.85). Riding last-time-out winners the record reads 16% (157 rides).

Deterministic profile computed from 2,396 archived runs (lifetime window) · updated 13 Nov 2026
KTB at a glance Fires Jul–Aug 29% when favourite John Flint: 8.3% from 216 LTO winners: 15.9% Claiming: 6.8% Rides the favourite in 3% of races
The read

The record is strongest at Leicester (12.8%, n=47), clear of the rider's 5.3% baseline. Rides on last-time-out winners have been a positive signal at 15.9% (n=157, Fair A/E 1.11), but horses returning fresh after 61+ days have been a poor signal at 2.3% (n=388, Fair A/E 0.53). The market has consistently overbet rides in big fields of 14 or more: 2.3% strike, Fair A/E 0.68 and −118.00 to a £1 stake over 220 rides — those runners underperform what the price implies. John Flint supplies 9% of the rides and edges the rider's average (8.3% vs 5.3%, A/E 1.28) — the partnership beats the margin-free market read. The rider also reads well on Heavy going (13.6%, n=44). The standout partner of the record: Glamorous Breeze (GB) — 5 wins from 26 rides together. Seasonally, the rider fires Jul–Aug.

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

Riding patterns

the angles behind the record · vs 5.3% baseline
First ride on the horse · first captured pairing
4.7%−0.6
n=1,267 · A/E 0.84 · £1 −678.00
Last-time-out winners · previous run was a win
15.9%+10.6
n=157 · A/E 1.11 · £1 −20.79
Fresh horses · 61+ days off
2.3%−3.0
n=388 · A/E 0.53 · £1 −196.00
When favourite
29%
n=69 · A/E 0.96 · £1 −17.93
Claiming rides · riding with a claim
6.8%+1.5
n=1,362 · A/E 0.91 · £1 −681.86
Big fields · 14+ runners
2.3%−3.0
n=220 · A/E 0.68 · £1 −118.00
Group / Graded races · pattern & listed
0%−5.3
n=12 · A/E 0.00 · £1 −12.00

Each tile is the record in that situation vs the 5.3% 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
On last-time-out winners 15.9% vs 5.3% · n=157
With Antony Brittain 16.7% vs 5.3% · n=30
On Heavy going 13.6% vs 5.3% · n=44
At Leicester 12.8% vs 5.3% · n=47
With Christopher Mason 10.8% vs 5.3% · n=120
With Roger Teal 12.9% vs 5.3% · n=31
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) 1,089 35 3.2% −759.56
Good 447 32 7.2% −149.40
Good to Firm 436 34 7.8% −123.08
Good to Soft 190 9 4.7% −103.38
Soft 133 9 6.8% +8.57
Firm 57 3 5.3% −30.50
Heavy 44 6 13.6% −7.50

Courses

CourseRWSR£1
Wolverhampton (AW) 385 11 2.9% −268.50
Kempton (AW) 258 7 2.7% −153.50
Chepstow 230 20 8.7% −37.63
Bath 213 10 4.7% −79.80
Lingfield (AW) 181 7 3.9% −136.71
Chelmsford (AW) 128 5 3.9% −105.48
Southwell (AW) 124 4 3.2% −101.37
Windsor 123 10 8.1% −45.67
Salisbury 79 7 8.9% −2.50
Brighton 77 5 6.5% −19.75
Newbury 64 3 4.7% +0.00
Ffos Las 63 4 6.3% −47.62
Nottingham 52 3 5.8% −41.61
Lingfield 50 2 4% −32.50
Leicester 47 6 12.8% +6.00

Class

ClassRWSR£1
Class 6 1,021 45 4.4% −518.12
Class 5 801 49 6.1% −377.16
Class 4 343 19 5.5% −173.94
Class 2 103 6 5.8% −30.50
Class 3 102 8 7.8% −50.13
Class 7 13 1 7.7% −2.00
Class 1 12 0 0% −12.00

Market position

In the bettingRWSRA/E£1
Favourite 85 26 30.6% 1.08 −12.59
2nd–3rd fav 282 43 15.2% 0.98 −49.76
4th–6th fav 711 39 5.5% 0.78 −301.50
7th+ in betting 1,318 20 1.5% 0.61 −801.00
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
Glamorous Breeze (GB) 26 5 13 31 Aug 24
Atty's Edge (GB) 23 4 12 15 Jun 24
Carp Kid (IRE) 22 1 7 1 Aug 25
Vape (GB) 21 2 8 24 Jun 24
Sea Of Charm (FR) 17 3 8 15 Aug 26
Outer Space (GB) 17 1 3 27 Sep 21
St Mary's (GB) 17 3 7 17 Oct 18
Air Of York (IRE) 15 4 5 9 Apr 22
Iconic Knight (IRE) 13 2 5 15 Jul 24
Champagne Highlife (GER) 13 1 1 12 Sep 21
Spirit Of The Bay (IRE) 12 1 3 27 Jun 26
Glamorous Anna (GB) 12 2 3 19 Jul 21
Showing the 60 most-raced of the 1,267 horses ridden in this window — each ran at least 5 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.

Current form

significance-gated

Last 14 days

Small sample
0 from 3
Only 3 rides in the last 14 days — too few to read against the baseline (gate: n≥15). The card states the sample and stays neutral.

By month

strike by month, lifetime
JFMAMJJASOND
333466776363
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 yardJohn Flint
9% of all rides
8.3% SR · A/E 1.28
TrainerRWSR£1
John Flint 216 18 8.3% −51.84
Andrew Balding 211 15 7.1% −109.58
Clive Cox 126 10 7.9% −64.80
Archie Watson 125 5 4% −37.62
Christopher Mason 120 13 10.8% −56.66
Tom Dascombe 76 4 5.3% +3.25
Charles Hills 71 7 9.9% +14.00
Ed de Giles 62 2 3.2% −44.00
Tony Newcombe 54 2 3.7% −31.50
Tony Carroll 51 2 3.9% −35.00
Georgina Nicholls 42 3 7.1% −3.50
Bernard Llewellyn 38 3 7.9% −4.00
Muted rows are under 30 rides.

Career highlights

lifetime archive, 2016→
128
Archived wins
£1.42m
Prize money
2018
Best season · 32 wins
Sioux Perfect (IRE) — 100,000 Tattersalls Somerville Auction Stakes (GBB Race) Newmarket · Aug 2025 · Class 2
£61,678
Porth Swtan (IRE) — Beverley Silver Cup Handicap Beverley · Sep 2018 · Class 2
£31,125
Socialite (IRE) — EBF Supports Great Racing Welfare Cycle Novice Stakes (GBB Race) Doncaster · Jun 2024 · Class 2
£21,600

Sires of the horses ridden

progeny record · win % by ground and trip
Cable Bay (IRE) 10% · 8–80
Progeny have won 9.9% of 3,728 runs since 2019 (243 horses). Strongest at trips under 6f (all codes): 13.8% from 645. Weakest over 1m2f – 1m4f (all codes): 5.5% from 290.
Dark Angel (IRE) 2.9% · 2–69
Progeny have won 11.3% of 21,957 runs since 2011 (1,596 horses). Strongest on Firm going: 15% from 107.
Kodiac (GB) 7.4% · 4–54
Progeny have won 10.4% of 23,606 runs since 2010 (1,666 horses). Strongest on Firm going: 14.3% from 147. Weakest over 2m1f – 2m4f (all codes): 7.1% from 255.
Havana Gold (IRE) 10% · 5–50
Progeny have won 9.5% of 5,064 runs since 2017 (402 horses). Weakest on Heavy going: 4.2% from 118. Strongest at trips under 6f (all codes): 13% from 523. Weakest over 1m5f – 2m (all codes): 6.2% from 177.
Acclamation (GB) 7.7% · 3–39
Progeny have won 10% of 19,719 runs since 2008 (1,327 horses). Strongest on Firm going: 15.2% from 151. Weakest over 2m1f – 2m4f (all codes): 6.7% from 195.
Lethal Force (IRE) 8.3% · 3–36
Progeny have won 10.7% of 4,270 runs since 2017 (268 horses). Weakest on Soft going: 6.1% from 359.
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 13 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 2,396 · newest first

The latest 50 of 2,396 archived rides, newest first. The full record runs from 9 March 2016 to 3 November 2026.

DateCourseHorseRaceFinishSP
29 Oct 26 Bath Neptune Legend (IRE)T: Tony Carroll Mj Church Handicap StakesClass 6 · 5f · Soft · 15 ran 12th 80/1
29 Oct 26 Bath Riyadh Gem (IRE)T: Faye Bramley Disability Inc Handicap StakesClass 6 · 8f · Soft · 14 ran 13th 50/1
19 Oct 26 Bath Raqraaq (USA)T: Patrick Chamings Elite Racing Club Handicap Stakes (Div I)Class 6 · 8f · Good To Soft · 14 ran 13th 100/1
14 Oct 26 Kempton (AW) Pints In Peace (IRE)T: Jim & Suzi Best Racing TV Handicap StakesClass 4 · 7f · Standard / Slow · 12 ran 9th 200/1
29 Sep 26 Bath Polly The Sniper (GB)T: Tom Dascombe Power Logistics Nursery Handicap StakesClass 6 · 5.5f · Good To Firm · 11 ran 2nd 9/1

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).

KTB’s figures

the forward record · since 5 Oct 2026

KTB’s figures on this rider’s mounts since 6 Oct 2026: the KTB Selection in 1 run (won 0) · to 6 Oct 2026.

Each pick was a KTB figure’s choice before the off — the published KTB Selection, the top-rated horse on KTB Rating, the fastest on KTB Speed — settled against the result the next morning and never worked out again; “did not run” is counted apart. GB and Irish races only. A record of weeks so far: read it as a count, not a verdict.

Quick answers

What is William Cox's strike rate?
William Cox has won 128 of 2,396 rides since 2008, a strike rate of 5.3% (as at 13 November 2026). Figures are computed from our own results archive.
Which course does William Cox do best at?
Leicester by strike rate: 6 wins from 47 rides (12.8%) 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 William Cox ride most for?
John Flint, with 216 rides since 2008 — 9% of the total. That pairing has won 18 (8.3%).
Is William Cox in form?
Too few rides in the last 14 days to read — 3 rides, which is not a sample we will draw a conclusion from.
What is William Cox's Fair A/E?
0.85, from 2,383 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 13 November 2026, computed from our own results archive (2005 onwards; aggregates from 2008).