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Horse profile

Isis (USA)

2yo filly (at last run, Jun 2005) · Last trainer Sir Henry Cecil · Last owner Dr Catherine Wills
by Royal Academy (USA) out of Incredulous (FR) (Indian Ridge)
2 runs · 2 courses · from May 2005
As at 21 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 1 Jun 2005 — 7,812 days ago. Our archive can't say whether the horse is still in training.
Last run Jun 2005 · 5th of 8
KTB Profile

Lightly raced, with 2 archived starts between May 2005 and Jun 2005, the last of them as a 2yo filly. Finished 5 of 8 at Yarmouth last time. By Royal Academy (USA), whose progeny in our archive have won 7.1% of 437 runs since Jan 2008.

Based on 2 archived runs · updated 21 Oct 2026

Progeny in our archive

Produce record

As a dam, Isis (USA) has 8 produce in the archive, 3 winners — most wins Insurgence (GB) (4 wins).

The wins came over 6f–7f; the highest grade won is Class 3 (Insurgence (GB)).

ProduceRunsWinsWin tripsBest grade
Insurgence (GB)1547fClass 3
Mawjoodah (GB)2516fClass 5
Iberis (GB)817fClass 5
Swordbearer (GB)140——
Isatis (GB)70——
Gaslight (GB)70——
Issue (GB)30——
Uproar (GB)60——

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 36C the best of the last 1 rated run · Yarmouth, 1 Jun 2005

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 1 figure · too few for a breakdown

Of 2 runs looked at, 1 has no figure: no runner of known ability in the race — the level cannot be solved (1).

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 1 figure from 2 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
Royal Academy (USA)

Progeny in our archive have won 7.1% of 437 runs since Jan 2008 (46 horses).

Strongest over 6f – 7f (all codes): 10.6% from 104.

GoingRunsWinsSRvs sireThis horse
Firm300%−7.1—
Good to Firm7633.9%−3.20 from 2
Good10254.9%−2.2—
Good to Soft5147.8%+0.7—
Soft52611.5%+4.4—
Heavy2827.1%0—
Standard (AW)125118.8%+1.7—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f700%−7.1—
6f – 7f1041110.6%+3.50 from 2
1m – 1m1f991212.1%+5—
1m2f – 1m4f10565.7%−1.4—
1m5f – 2m7422.7%−4.4—
2m1f – 2m4f3900%−7.1—
2m5f – 3m800%−7.1—
Over 3m100%−7.1—

Flat and jumps together (all codes) · since Jan 2008 · as at 21 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Incredulous (FR) (Indian Ridge)

4 siblings in the archive, 4 winners — best of them Mighty Zip (USA) (7 wins).

The wins came over 5f–1m1f; the highest grade won is Group 2 (Sir Gerry (USA)).

ProduceRunsWinsWin tripsBest grade
Mighty Zip (USA)5775f–6fClass 4
Sir Gerry (USA)2846fGroup 2
Sea Fight (USA)3221m—
Unbeliever (USA)311m1f—

Too few runs for meaningful splits. The full record is below.

Form

DateCourseRace PosBtn Wgt KTB Jockey SP
01 Jun 05+12d Yarmouth E,B.F. Novice Stakes Class 5 · 6f · Good To Firm · 8 ran 5/8 2 8-7 36C Ted Durcan 2/1
20 May 05 Newmarket E.B.F. Maiden Fillies' Stakes Class 5 · 6f · Good To Firm · 11 ran 3/11 1 8-11 — Jimmy Quinn 11/4

Quick answers

How many races has Isis (USA) won?
Isis (USA) has yet to win, from 2 archived starts in 2005. Placed 1 time in total (50% of starts).
Who trained Isis (USA)?
Isis (USA) was trained by Sir Henry Cecil on the most recent run on record, at Yarmouth on 1 June 2005.
Who is Isis (USA)'s sire?
Isis (USA) is by Royal Academy (USA) out of Incredulous (FR), whose sire is Indian Ridge.
What is Isis (USA)'s sire's record?
Royal Academy (USA)'s progeny in our archive have won 7.1% of 437 runs since Jan 2008 (46 horses), Flat and jumps together. Strongest over 6f – 7f (all codes): 10.6% from 104.
Who are Isis (USA)'s siblings?
Out of Incredulous (FR), Isis (USA) has 4 other produce in our archive, 4 of them winners. Most wins: Mighty Zip (USA) (7). Highest grade won: Group 2 (Sir Gerry (USA)). The wins came over 5f–1m1f. As at Oct 2026.
Has Isis (USA) produced winners?
As a dam, Isis (USA) has 8 produce in our archive, 3 of them winners. Most wins: Insurgence (GB) (4). Highest grade won: Class 3 (Insurgence (GB)). The wins came over 6f–7f. As at Oct 2026.

Record shown from May 2005. 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.