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Horse profile

Diomed Duke (GB)

4yo gelding · Trainer Stuart Williams · Owner Diomed Racing
20 runs · 11 courses · from Jun 2024
As at 12 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
4 wins · Lingfield (AW), Lingfield & Bath Last run 30 Oct 2026 · 2nd of 13 Last raced off OR 80
KTB Profile

Typically ridden prominently in 10 of 17 analysed runs — Diomed Duke (GB) is 4 from 20. All 4 wins have come over trips under 6f. Last raced off a career-high mark of 80.

Based on 20 archived runs · run-style from 17 commented runs since Aug 2024 · updated 12 Nov 2026
KTB at a glance Typically prominent OR at career high
Official rating80At career-high mark
80 70–80

KTB Speed and Rating

KTB Speed

Best recent Speed 106 the best of the last 3 graded (A or B) runs · Yarmouth, 20 Oct 2026

How fast the horse ran, as points against the day-corrected standard time for its course and distance: 100 is the median GB Class 4 handicap winner on that code; one point is 0.1% of the standard time. A, B or C is how much the day's card could tell us, not how good the run was. What this means →

Flat 20 figures · best 119C · median 94
GoingRunsBestMedianSince 12 Nov 2025
Good to Firm9117A944 runs · 117 / 101
Good to Soft493C86.52 runs · 93 / 92
Standard (AW)3119C1191 run · —
Good3106A991 run · —
Soft1——1 run · —
DistanceRunsBestMedianSince 12 Nov 2025
Under 6f17119C959 runs · 119 / 106
6f – 7f383A76—

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 20 figures from 20 runs · as at 7 Nov 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 95A the best of the last 3 rated runs · Newmarket, 30 Oct 2026 Official rating 80 at the last run, 30 Oct 2026

What the horse achieved in each race, in pounds on the official-rating scale, from the weight carried, the lengths beaten and the race's own level solved across the archive — never the market, never the official rating as a starting point. The headline is the best of the horse's last three rated runs on that code — its best recent day. The KTB Rating on a racecard is a different reading of the same figures: the level the horse has been running to, an average of up to its last six runs with the latest counting most, so the two can differ. A, B or C on a run is how much known form was in that race. What this means →

Flat 20 figures · best 101A · median 83.5
GoingRunsBestMedianSince 12 Nov 2025
Good to Firm9101A834 runs · 94 / 88
Good to Soft495A86.52 runs · 95 / 89.5
Standard (AW)379B741 run · —
Good396A861 run · —
Soft1——1 run · —
DistanceRunsBestMedianSince 12 Nov 2025
Under 6f17101A869 runs · 95 / 86
6f – 7f381A78—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 20 figures from 20 runs · as at 7 Nov 2026 · a record, not a forecast

Both figures are KTB's own, computed from the archive; no vendor rating enters either. Every run's figure is on its form line below with its grade. Grades measure how much the archive could see, never the merit of the run.

Run style from 17 analysed runs since Aug 2024

  • Prominent 10 (59%) · 2 wins
  • Led 4 (24%) · 1 win
  • Held up 2 (12%) · 0 wins
  • Mid-division 1 (6%) · 0 wins

Pedigree intelligence

Sire

Progeny in our archive have won 10.7% of 7,395 runs since Apr 2016 (442 horses).

Strongest at trips under 6f (all codes): 13.7% from 1,731. Weakest over 1m5f – 2m (all codes): 2.8% from 106.

GoingRunsWinsSRvs sireThis horse
Firm22627.3%+16.6—
Good to Firm1,02312111.8%+1.13 from 9
Good1,37013910.1%−0.60 from 3
Good to Soft8089211.4%+0.70 from 4
Soft97511511.8%+1.10 from 1
Heavy3243410.5%−0.2—
Standard (AW)2,87328610%−0.71 from 3
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f1,73123813.7%+34 from 17
6f – 7f3,92040110.2%−0.50 from 3
1m – 1m1f1,1491129.7%−1—
1m2f – 1m4f453378.2%−2.5—
1m5f – 2m10632.8%−7.9—
2m1f – 2m4f3013.3%−7.4—
2m5f – 3m6116.7%+6—

Flat and jumps together (all codes) · since Apr 2016 · as at 12 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam

1 sibling in the archive, 0 winners.

ProduceRunsWinsWin tripsBest grade
Fordham Flyer (GB)70——

Record by conditions

GoingRunsWinsSR£1
Good to Firm 9 3 33% +3.76
Good to Soft 4 0 0% −4.00
Standard (AW) 3 1 33% −0.50
Good 3 0 0% −3.00
Soft 1 0 0% −1.00

ClassRunsWinsSR£1
Class 4 11 1 9% −8.50
Class 5 7 3 43% +5.76
Class 3 1 0 0% −1.00
Class 2 1 0 0% −1.00

CourseRunsWinsSR£1
Yarmouth 5 0 0% −5.00
Newmarket 3 0 0% −3.00
Lingfield (AW) 2 1 50% +0.50
Newmarket (July) 2 0 0% −2.00
Lingfield 2 2 100% +7.88
Windsor 1 0 0% −1.00
York 1 0 0% −1.00
Sandown 1 0 0% −1.00
Bath 1 1 100% +1.88
Chepstow 1 0 0% −1.00
Chelmsford City (AW) 1 0 0% −1.00

DistanceRunsWinsSR£1
Under 6f 17 4 24% −1.74
6f – 7f 3 0 0% −3.00

JockeyRunsWinsSR£1
Olivia Haines 6 2 33% −1.12
Marco Ghiani 5 0 0% −5.00
Pat Cosgrave 2 1 50% +0.88
Rossa Ryan 2 0 0% −2.00
Ray Dawson 1 0 0% −1.00
Rob Hornby 1 0 0% −1.00
Jack Nicholls 1 0 0% −1.00
Luke Catton 1 1 100% +6.50
Daniel Muscutt 1 0 0% −1.00

HeadgearRunsWinsSR£1
Tongue tie 16 3 19% −3.62
None 4 1 25% −1.12

SeasonRunsWinsSR£1
2026 9 2 22% −4.12
2025 6 1 17% +1.50
2024 5 1 20% −2.12

Splits include every sample, however small — muted rows are under 3 runs. A one-from-one record is a fact, not a trend: read the Runs column before the strike rate.

Form

DateCourseRace PosBtn Wgt ORSpdKTB Jockey SP
2026 · 9 runs
30 Oct 26+10d Newmarket 157 Grosser Preis Von Baden Handicap Stakes Class 4 · 5f · Good To Soft · 13 ran Raced freely early - up with the pace - asked for effort over 1f out - challenged winner bravely inside final furlong - just denied late on for second 2/13 nk 9-2 8093C95A Olivia Haines 9/1
20 Oct 26+35d Yarmouth Infobond Turnkey & Personnel Services Handicap Stakes Class 4 · 5f · Soft · 8 ran Over-eager early - up with the pace - urged along over 1f out - stayed on inside final furlong - petered out near finish for 3rd 3/8 1 9-2 80106A87A Olivia Haines 12/1
15 Sep 26+12d Yarmouth Winning Experience With Moulton Racing Handicap Stakes Class 4 · 5f · Good To Soft · 6 ran Settled second early on near rail - unable to match winner's pace inside final furlong - stayed on to finish second 2/6 5 9-5 8091A84B Olivia Haines 5/2
03 Sep 26+12d Lingfield (AW) Free Tips On attheraces.com Handicap Stakes Class 4 · 5f · Standard · 5 ran 1/5 9-1 76119C79B Olivia Haines 6/4F
22 Aug 26+28d Newmarket (July) Polhill Cutting Handicap Stakes Class 4 · 5f · Good · 7 ran Raced with plenty of enthusiasm early - hit the front - matched by rival 2f out then pushed along and overtaken with a furlong left - fought back gamely inside the closing stages - lacked the speed of the front two but held third 3/7 ¾ 9-3 76106A86A Olivia Haines 3/1
25 Jul 26+8d Lingfield Smith & Western Showdown Handicap Stakes Class 5 · 5f · Good To Firm · 7 ran up with the pace out wide - went to the front two furlongs out under a drive - stayed on strongly to assert late 1/7 9-3 7194A93A Olivia Haines 11/8F
17 Jul 26+27d Newmarket (July) Madness Handicap Stakes Class 4 · 5f · Good To Firm · 7 ran went to the front from the middle of the field early - was ridden over 1f out - was overtaken inside the final furlong - stayed on but could not get on terms with the winner beaten two lengths in second 2/7 2 9-1 72108A94A Ray Dawson 100/30
20 Jun 26+19d Newmarket JCB Tele-Handler Handicap Class 5 · 5f · Good To Firm · 7 ran Went to the front early - driven to hold position inside final 2f - overtaken with a furlong left - bumped lightly entering last furlong - weakened close home to finish fifth beaten 3.5 lengths 5/7 ½ 10-0 7492A83A Rob Hornby 9/2
01 Jun 26+223d Windsor Fenchurch Insurance Brokers Handicap Class 4 · 5f · Good To Firm · 8 ran Settled close to the pace - still holding claims inside the final furlong - lost placing approaching the last 110yds - dropped away towards the line to finish 5th 5/8 ¾ 9-0 76117A82A Marco Ghiani 6/1
2025 · 6 runs
21 Oct 25+38d Yarmouth bettingsites.co.uk Betting Sites Handicap Class 4 · 5f · Good To Soft · 10 ran Sat close to pace early - hit front near the stands rail with 2f left - pushed along when overtaken inside final furlong and hung on for third 3/10 ¾ 9-6 7782A89A Marco Ghiani 6/1
13 Sep 25+20d Lingfield (AW) Free Race Replays On attheraces.com Handicap Class 4 · 5f · Standard · 10 ran Held a midfield spot early - pushed along inside the final furlong and dropped away late 7/10 ½ 9-1 78119A74A Pat Cosgrave 11/2
24 Aug 25+30d Yarmouth QuinnBet Handicap Class 3 · 5f · Good To Firm · 6 ran Handy early - hit front with a furlong left under pressure - overtaken close home and held for fourth 4/6 hd 8-10 7994B83B Jack Nicholls 13/2
25 Jul 25+27d York Sky Bet Go-Racing-In-Yorkshire Summer Festival Handicap Class 4 · 5½f · Good · 15 ran Handy early - hit front over 3f out before giving way inside final 2f - couldn't find more in closing stages finishing fifth 5/15 1¼ 9-9 8083C96A Marco Ghiani 8/1
28 Jun 25+45d Lingfield RJB Agri Ltd Handicap Class 5 · 5f · Good To Firm · 8 ran Set the pace from the off - edged clear approaching the closing stages under a shake-up - stayed on strongly to clear rivals inside the final furlong - won comfortably 1/8 9-0 70114A96A Luke Catton 13/2
14 May 25+221d Yarmouth Branford's Restaurant & Bar Handicap Class 5 · 5f · Good To Firm · 10 ran Held up towards the back early - made progress into contention by halfway then angled left to challenge for third over a furlong out - dropped away approaching the final stages 5/10 nk 9-6 7295B83A Marco Ghiani 5/1
2024 · 5 runs
05 Oct 24+36d Newmarket 150,000 Tattersalls October Auction Stakes (GBB Race) Class 2 · 6f · Good To Soft · 18 ran Held up handy in the early stages - urged for effort 2f out - dropped away and driven out 1f out - weakened into 7th 7/18 1¾ 8-7 7476C78A Marco Ghiani 100/1
30 Aug 24+13d Sandown Visit Sri Lanka Nursery Class 4 · 5f · Good · 6 ran Checked early and settled at the rear - shifted wide at halfway - lost touch inside final furlong to finish sixth 6/6 9 9-4 7499B33B Rossa Ryan 7/2
17 Aug 24+22d Bath Supporting Great Britain's Tap Dance Team EBF Restricted Maiden Stakes (GBB Race) Class 5 · 5½f · Good To Firm · 9 ran Handy in the early running - hit the front with 4f left - drifted a touch left inside the last furlong - kept finding more to score with ease 1/9 9-7 —91B101A Pat Cosgrave 15/8F
26 Jul 24+50d Chepstow bet365 Ebf Restricted Maiden Stakes (GBB Race) Class 5 · 6f · Good To Firm · 8 ran 3/8 1½ 9-7 —58A81A Daniel Muscutt 9/2
06 Jun 24 Chelmsford City (AW) Ire-Incentive, It Pays To Buy Irish Restricted Maiden Stakes (GBB Race) (Div 2) Class 5 · 6f · Standard · 10 ran 5/10 1½ 9-7 —83A72A Rossa Ryan 22/1

Quick answers

How many races has Diomed Duke won?
Diomed Duke (GB) won 4 of 20 archived starts between 2024 and 2026, a strike rate of 20%. Placed 10 times in total (50% of starts).
Who trains Diomed Duke?
Diomed Duke (GB) is trained by Stuart Williams, who saddled the horse on its most recent run on 30 October 2026.
Who is Diomed Duke's sire?
Diomed Duke (GB) is by Mayson (GB) out of Three Little Birds (GB), whose sire is Dandy Man (IRE).
What going does Diomed Duke prefer?
Diomed Duke (GB) has the best record on good to firm going: 3 wins from 9 starts (33.3%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is Diomed Duke's official rating?
The most recent official rating on record is 80, from the run on 30 October 2026. That is also the highest on record.
What is Diomed Duke's sire's record?
Mayson (GB)'s progeny in our archive have won 10.7% of 7,395 runs since Apr 2016 (442 horses), Flat and jumps together. Strongest at trips under 6f (all codes): 13.7% from 1,731. Weakest over 1m5f – 2m (all codes): 2.8% from 106.
Who are Diomed Duke's siblings?
Out of Three Little Birds (GB), Diomed Duke (GB) has 1 other produce in our archive, 0 of them winners. As at Nov 2026.

Record shown from June 2024. Our archive holds racing in Great Britain, Ireland and France from January 2005. Any runs before that, or in other countries, are not in it. In-running comments are available from 2024 onward.