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Horse profile

Gripsholm Castle (USA)

3yo filly (at last run, Oct 2009) · Last trainer Sir Henry Cecil · Last owner Gestut Ammerland
by Dynaformer (USA) out of Randaroo (USA) (Gold Case)
4 runs · 3 courses · from May 2009
As at 4 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 16 Oct 2009 — 6,228 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2009 · 12th of 13 2 wins · Haydock & Newmarket Last raced off OR 99
KTB Profile

Gripsholm Castle (USA) is 2 from 4. Hasn't won since Sep 2009.

Based on 4 archived runs · updated 4 Nov 2026

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 104B the best of the last 3 rated runs · Haydock, 26 Sep 2009 Official rating 99 at the last run, 16 Oct 2009

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 4 figures · best 104B · median 85
GoingRunsBestMedianSince 4 Nov 2025
Good to Firm3104B95—
Good1———
DistanceRunsBestMedianSince 4 Nov 2025
1m2f – 1m4f4104B85—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 4 figures from 4 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%−1.3—
Heavy1321813.6%−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%+6—
1m2f – 1m4f5839816.8%+2.22 from 4
1m5f – 2m4725611.9%−2.7—
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 4 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Randaroo (USA) (Gold Case)

1 sibling in the archive, 0 winners.

ProduceRunsWinsWin tripsBest grade
Naoshima (USA)50——

Record by conditions

GoingRunsWinsSR£1
Good to Firm 3 2 67% +22.33
Good 1 0 0% −1.00

ClassRunsWinsSR£1
Class 1 2 0 0% −2.00
Class 3 1 1 100% +3.33
Class 4 1 1 100% +20.00

CourseRunsWinsSR£1
Newmarket 2 1 50% +19.00
Haydock 1 1 100% +3.33
Newcastle 1 0 0% −1.00

JockeyRunsWinsSR£1
Tom Queally 2 0 0% −2.00
Ian Mongan 2 2 100% +23.33

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
2009 · 4 runs
16 Oct 09+20d Newmarket Lanwades Stud Severals Stakes (Fillies' Listed) Class 1 · 1m2f · Good · 13 ran 12/13 nse 8-11 9975A Tom Queally 4/1
26 Sep 09+93d Haydock E.B.F. Reprocolor Fillies' Handicap Class 3 · 1m2½f · Good To Firm · 6 ran 1/6 9-8 89104B Ian Mongan 10/3F
25 Jun 09+42d Newcastle E.B.F. Hoppings Stakes (Fillies Listed) Class 1 · 1m2f · Good To Firm · 8 ran 4/8 nse 8-7 8974A Tom Queally 13/8F
14 May 09 Newmarket Orbital Foods Maiden Stakes Class 4 · 1m2f · Good To Firm · 8 ran 1/8 8-12 —95A Ian Mongan 20/1

Quick answers

How many races has Gripsholm Castle won?
Gripsholm Castle (USA) won 2 of 4 archived starts in 2009, a strike rate of 50%. Placed 2 times in total (50% of starts).
Who trained Gripsholm Castle?
Gripsholm Castle (USA) was trained by Sir Henry Cecil on the most recent run on record, at Newmarket on 16 October 2009.
Who is Gripsholm Castle's sire?
Gripsholm Castle (USA) is by Dynaformer (USA) out of Randaroo (USA), whose sire is Gold Case.
What going does Gripsholm Castle prefer?
Gripsholm Castle (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 Gripsholm Castle's official rating?
The most recent official rating on record is 99, from the run on 16 October 2009. That is also the highest on record.
What is Gripsholm Castle'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 Gripsholm Castle's siblings?
Out of Randaroo (USA), Gripsholm Castle (USA) has 1 other produce in our archive, 0 of them winners. As at Nov 2026.

Record shown from May 2009. 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.