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Horse profile

Ambiguity (IRE)

3yo gelding (at last run, Dec 2017) · Last trainer Joseph Patrick O'Brien · Last owner Mrs A M Obrien
by Fastnet Rock (AUS) out of Descant (USA) (Nureyev)
14 runs · 7 courses · from Apr 2016
As at 20 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 6 Dec 2017 — 3,240 days ago. Our archive can't say whether the horse is still in training.
Last run Dec 2017 · 8th of 13 Won at Tipperary Last raced off OR 65
KTB Profile

Ambiguity (IRE) is 1 from 14. Hasn't won since Apr 2016. Last raced off 65, 26lb below the career-high mark.

Based on 14 archived runs · updated 20 Oct 2026
KTB at a glance OR ↓ 26lb off peak
Official rating65↓ 26lb off peak
65 65–91

KTB Speed and Rating

KTB Speed

Best recent Speed 84 the best of the last 3 graded (A or B) runs · Dundalk (AW), 6 Dec 2017

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 6 figures · best 84B · median 63.5
GoingRunsBestMedianSince 20 Oct 2025
Standard (AW)384B80—
Heavy1———
Good1———
Good to Soft1———
DistanceRunsBestMedianSince 20 Oct 2025
6f – 7f484B63.5—
1m – 1m1f1———
Under 6f1———

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 6 figures from 6 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 70A the best of the last 3 rated runs · Dundalk (AW), 10 Nov 2017 Official rating 65 at the last run, 6 Dec 2017

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 14 figures · best 92A · median 66
GoingRunsBestMedianSince 20 Oct 2025
Soft592A71—
Standard (AW)370A66—
Heavy273B55—
Good to Soft266B60—
Good1———
Good to Firm1———
DistanceRunsBestMedianSince 20 Oct 2025
6f – 7f882B66—
Under 6f592A71—
1m – 1m1f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 14 figures from 14 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
Fastnet Rock (AUS)

Progeny in our archive have won 12.1% of 5,479 runs since Jan 2008 (556 horses).

Weakest over 2m1f – 2m4f (all codes): 9% from 211.

GoingRunsWinsSRvs sireThis horse
Firm1417.1%−5—
Good to Firm6768712.9%+0.80 from 1
Good1,21614812.2%+0.10 from 1
Good to Soft5727613.3%+1.20 from 2
Soft1,010979.6%−2.50 from 5
Heavy3193711.6%−0.51 from 2
Standard (AW)1,67121713%+0.90 from 3
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f1081513.9%+1.81 from 5
6f – 7f1,09712611.5%−0.60 from 8
1m – 1m1f1,48317311.7%−0.40 from 1
1m2f – 1m4f1,86424213%+0.9—
1m5f – 2m6738813.1%+1—
2m1f – 2m4f211199%−3.1—
2m5f – 3m4112.4%−9.7—
Over 3m200%−12.1—

Flat and jumps together (all codes) · since Jan 2008 · as at 20 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Descant (USA) (Nureyev)

6 siblings in the archive, 4 winners — best of them Roaring Forte (IRE) (4 wins).

The wins came over 6f–1m; the highest grade won is Group 2 (Cougar Mountain (IRE)).

ProduceRunsWinsWin tripsBest grade
Roaring Forte (IRE)947f–1mClass 2
Cougar Mountain (IRE)2836f–1mGroup 2
Californiadreaming (IRE)1911m—
Far Note (USA)2816fClass 6
Kings Art (IRE)120——
Poinciana (IRE)10——

Record by conditions

GoingRunsWinsSR£1
Soft 5 0 0% −5.00
Standard (AW) 3 0 0% −3.00
Heavy 2 1 50% −0.33
Good to Soft 2 0 0% −2.00
Good 1 0 0% −1.00
Good to Firm 1 0 0% −1.00

ClassRunsWinsSR£1
Class 1 1 0 0% −1.00

CourseRunsWinsSR£1
Curragh 5 0 0% −5.00
Dundalk (AW) 3 0 0% −3.00
Tipperary 2 1 50% −0.33
Leopardstown 1 0 0% −1.00
Curragh (IRE) 1 0 0% −1.00
Ascot 1 0 0% −1.00
Naas 1 0 0% −1.00

DistanceRunsWinsSR£1
6f – 7f 8 0 0% −8.00
Under 6f 5 1 20% −3.33
1m – 1m1f 1 0 0% −1.00

JockeyRunsWinsSR£1
Donnacha O'Brien 8 1 13% −6.33
Colm O'Donoghue 2 0 0% −2.00
Sean Corby 1 0 0% −1.00
Shane Crosse 1 0 0% −1.00
P B Beggy 1 0 0% −1.00
Ana O'Brien 1 0 0% −1.00

HeadgearRunsWinsSR£1
None 5 1 20% −3.33
Tongue tie 3 0 0% −3.00
Tongue tie + blinkers 2 0 0% −2.00
Tongue tie + cheekpieces 2 0 0% −2.00
Tongue tie + visor 1 0 0% −1.00
Blinkers 1 0 0% −1.00

SeasonRunsWinsSR£1
2017 6 0 0% −6.00
2016 8 1 13% −6.33

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 ORSpdKTB Jockey SP
06 Dec 17+26d Dundalk (AW) Crowne Plaza Race & Stay Handicap (45-70) (Div 1) 6f · Standard · 13 ran 8/13 1¼ 9-6 6584B66A Sean Corby 25/1
10 Nov 17+7d Dundalk (AW) Dundalk Stadium Claiming Race 6f · Standard · 13 ran 7/13 1 9-6 6574B70A Shane Crosse 33/1
03 Nov 17+145d Dundalk (AW) Dundalk Stadium Claiming Race 8f · Standard · 13 ran 11/13 4½ 9-4 7580B49A P B Beggy 33/1
11 Jun 17+29d Curragh TRM Supporting Global Champions Handicap 5f · Soft To Heavy · 11 ran 11/11 nk 8-11 8040C37C Colm O'Donoghue 20/1
13 May 17+35d Curragh Plusvital Racing Genepak Handicap 6f · Good · 14 ran 13/14 4½ 8-12 8345C42A Colm O'Donoghue 20/1
08 Apr 17+230d Leopardstown Leopardstown Family Raceday Handicap 7f · Good To Yielding · 11 ran 11/11 ¾ 9-6 8453A54A Ana O'Brien 16/1
21 Aug 16+14d Curragh (IRE) At The Races Nursery Handicap (Plus 10 Race) 6f · Yielding To Soft · 6 ran 4/6 1¾ 9-4 89—67B Donnacha O'Brien 11/8F
07 Aug 16+22d Curragh Keeneland Phoenix Stakes (group 1) 6f · Good To Firm · 5 ran 5/5 2 9-3 91—66B Donnacha O'Brien 50/1
16 Jul 16+7d Curragh Jebel Ali Racecourse & Stables Anglesey Stakes (Group 3) 6.5f · Good To Yielding · 6 ran 6/6 nk 9-3 91—66B Donnacha O'Brien 50/1
09 Jul 16+25d Tipperary Excelebration Tipperary Stakes (Listed) 5f · Yielding · 11 ran 6/11 nk 9-3 ——71A Donnacha O'Brien 11/2
14 Jun 16+24d Ascot Windsor Castle Stakes (Listed) Class 1 · 5f · Soft · 22 ran 18/22 ½ 9-3 ——51A Donnacha O'Brien 33/1
21 May 16+10d Curragh Cold Move European Breeders Fund Marble Hill Stakes (Listed) 5f · Yielding To Soft · 9 ran 3/9 4¼ 9-3 ——92A Donnacha O'Brien 12/1
11 May 16+20d Naas Fishery Lane Race (Plus 10) 6f · Yielding To Soft · 7 ran 2/7 6 9-2 ——82B Donnacha O'Brien 2/1
21 Apr 16 Tipperary Irish Stallion Farms E.B.F. Race 5f · Heavy · 5 ran 1/5 8-11 ——73B Donnacha O'Brien 4/6F

Quick answers

How many races has Ambiguity (IRE) won?
Ambiguity (IRE) won 1 of 14 archived starts between 2016 and 2017, a strike rate of 7.1%. Placed 3 times in total (21.4% of starts).
Who trained Ambiguity (IRE)?
Ambiguity (IRE) was trained by Joseph Patrick O'Brien on the most recent run on record, at Dundalk (AW) on 6 December 2017.
Who is Ambiguity (IRE)'s sire?
Ambiguity (IRE) is by Fastnet Rock (AUS) out of Descant (USA), whose sire is Nureyev.
What is Ambiguity (IRE)'s official rating?
The most recent official rating on record is 65, from the run on 6 December 2017. The highest on record is 91.
What is Ambiguity (IRE)'s sire's record?
Fastnet Rock (AUS)'s progeny in our archive have won 12.1% of 5,479 runs since Jan 2008 (556 horses), Flat and jumps together. Weakest over 2m1f – 2m4f (all codes): 9% from 211.
Who are Ambiguity (IRE)'s siblings?
Out of Descant (USA), Ambiguity (IRE) has 6 other produce in our archive, 4 of them winners. Most wins: Roaring Forte (IRE) (4). Highest grade won: Group 2 (Cougar Mountain (IRE)). The wins came over 6f–1m. As at Oct 2026.

Record shown from April 2016. 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.