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Horse profile

Thought Worthy (USA)

3yo gelding (at last run, Sep 2012) · Last trainer John Gosden · Last owner George Strawbridge
by Dynaformer (USA) out of Vignette (USA) (Diesis)
7 runs · 7 courses · from Oct 2011
As at 28 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 15 Sep 2012 — 5,156 days ago. Our archive can't say whether the horse is still in training.
Last run Sep 2012 · 6th of 9 3 wins · York, Newmarket & Newcastle Last raced off OR 115
KTB Profile

Thought Worthy (USA) is 3 from 7, including a Group 2 win. The biggest win we hold: the Neptune Investment Management Great Voltigeur Stakes at York (Aug 2012). Hasn't won since Aug 2012. Each win came on a first visit to the course. Last raced off a career-high mark of 115.

Based on 7 archived runs · updated 28 Oct 2026
KTB at a glance OR at career high
Official rating115At career-high mark
115 88–115

KTB Speed and Rating

KTB Speed

No KTB Speed figures for this horse. The engine scores GB and Irish racing from Oct 2016; runs elsewhere, or earlier, have no figure.

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 0 figures from 0 runs · a record, not a forecast

KTB Rating

Best recent KTB Rating 102B the best of the last 3 rated runs · Ascot, 22 Jun 2012 Official rating 115 at the last run, 15 Sep 2012

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. A, B or C on a run is how much known form was in that race. What this means →

Flat 7 figures · best 106B · median 100
GoingRunsBestMedianSince 28 Oct 2025
Good to Firm3101B100—
Soft2102B100.5—
Good1———
Heavy1———
DistanceRunsBestMedianSince 28 Oct 2025
1m2f – 1m4f5106B101—
1m5f – 2m1———
1m – 1m1f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 7 figures from 7 runs · as at 4 Oct 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 is derived from in-running commentary, which our data provider does not supply for this horse's races.

Pedigree intelligence

Sire
Dynaformer (USA)

Progeny in our archive have won 14.6% of 1,776 runs since Jan 2008 (154 horses).

Strongest over 1m – 1m1f (all codes): 20.6% from 199. Weakest over 2m5f – 3m (all codes): 8.3% from 169.

GoingRunsWinsSRvs sireThis horse
Firm9111.1%−3.5—
Good to Firm2804817.1%+2.52 from 3
Good4326715.5%+0.90 from 1
Good to Soft2523815.1%+0.5—
Soft3324413.3%−1.31 from 2
Heavy1321813.6%−10 from 1
Standard (AW)3394312.7%−1.9—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f200%−14.6—
6f – 7f811417.3%+2.7—
1m – 1m1f1994120.6%+61 from 1
1m2f – 1m4f5839816.8%+2.22 from 5
1m5f – 2m4725611.9%−2.70 from 1
2m1f – 2m4f2403213.3%−1.3—
2m5f – 3m169148.3%−6.3—
Over 3m30413.3%−1.3—

Flat and jumps together (all codes) · since Jan 2008 · as at 28 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Vignette (USA) (Diesis)

8 siblings in the archive, 6 winners — best of them Flying Officer (USA) (6 wins).

The wins came over 7f–2m; the highest grade won is Group 1 (Lucarno (USA)).

ProduceRunsWinsWin tripsBest grade
Flying Officer (USA)1161m–2mGroup 2
Lucarno (USA)1251m–1m6½fGroup 1
Corelli (USA)1031m1½f–1m4fClass 3
Worthily (USA)311m2fClass 5
Tartini (USA)611m½fClass 4
Morning Charm (USA)217fClass 4
Up To You (USA)40——
Morning View (USA)10——

Record by conditions

GoingRunsWinsSR£1
Good to Firm 3 2 67% +9.88
Soft 2 1 50% +5.00
Good 1 0 0% −1.00
Heavy 1 0 0% −1.00

ClassRunsWinsSR£1
Class 1 6 2 33% +6.88
Class 5 1 1 100% +6.00

CourseRunsWinsSR£1
Doncaster 1 0 0% −1.00
York 1 1 100% +9.00
Ascot 1 0 0% −1.00
Epsom Downs 1 0 0% −1.00
Newmarket 1 1 100% +1.88
Sandown 1 0 0% −1.00
Newcastle 1 1 100% +6.00

DistanceRunsWinsSR£1
1m2f – 1m4f 5 2 40% +7.88
1m5f – 2m 1 0 0% −1.00
1m – 1m1f 1 1 100% +6.00

SeasonRunsWinsSR£1
2012 6 2 33% +6.88
2011 1 1 100% +6.00

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 ORKTB Jockey SP
2012 · 6 runs
15 Sep 12+24d Doncaster Ladbrokes St Leger Stakes (British Champions Series) (Group 1) Class 1 · 14.5f · Good · 9 ran 6/9 8 9-0 11584A William Buick 10/1
22 Aug 12+61d York Neptune Investment Management Great Voltigeur Stakes (Group 2) Class 1 · 12f · Good To Firm · 6 ran 1/6 8-12 106101B William Buick 9/1
22 Jun 12+20d Ascot King Edward VII Stakes (Group 2) Class 1 · 12f · Soft · 5 ran 3/5 nk 8-12 106102B William Buick 8/1
02 Jun 12+14d Epsom Downs Investec Derby (Group 1) Class 1 · 12f · Good To Firm · 9 ran 4/9 6 9-0 10689A William Buick 16/1
19 May 12+21d Newmarket poptelecom.co.uk Fairway Stakes (Listed) Class 1 · 10f · Good To Firm · 5 ran 1/5 9-0 106100B William Buick 15/8J
28 Apr 12+200d Sandown bet365 Classic Trial (Group 3) Class 1 · 10f · Heavy · 4 ran 2/4 1¾ 9-0 88106B William Buick 9/2
2011 · 1 run
11 Oct 11 Newcastle British Stallion Studs Supporting British Racing E.B.F. Maiden Stakes (Str) Class 5 · 8f · Soft · 13 ran 1/13 9-0 —99A William Buick 6/1

Quick answers

How many races has Thought Worthy won?
Thought Worthy (USA) won 3 of 7 archived starts between 2011 and 2012, a strike rate of 42.9%. Placed 3 times in total (42.9% of starts).
Who trained Thought Worthy?
Thought Worthy (USA) was trained by John Gosden on the most recent run on record, at Doncaster on 15 September 2012.
Who is Thought Worthy's sire?
Thought Worthy (USA) is by Dynaformer (USA) out of Vignette (USA), whose sire is Diesis.
What going does Thought Worthy prefer?
Thought Worthy (USA) has the best record on good to firm going: 2 wins from 3 starts (66.7%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is Thought Worthy's official rating?
The most recent official rating on record is 115, from the run on 15 September 2012. That is also the highest on record.
What is Thought Worthy's sire's record?
Dynaformer (USA)'s progeny in our archive have won 14.6% of 1,776 runs since Jan 2008 (154 horses), Flat and jumps together. Strongest over 1m – 1m1f (all codes): 20.6% from 199. Weakest over 2m5f – 3m (all codes): 8.3% from 169.
Who are Thought Worthy's siblings?
Out of Vignette (USA), Thought Worthy (USA) has 8 other produce in our archive, 6 of them winners. Most wins: Flying Officer (USA) (6). Highest grade won: Group 1 (Lucarno (USA)). The wins came over 7f–2m. As at Oct 2026.

Record shown from October 2011. Our archive holds racing in Great Britain, Ireland and France from January 2005. Runs in other countries are not in it, and earlier runs are not available from our data provider. In-running comments are available from 2024 onward.