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Horse profile

Nelson (IRE)

3yo colt (at last run, Oct 2018) · Last trainer A P O'Brien · Last owner Mrs John Magnier Michael Tabor Derrick Smith
by Frankel (GB) out of Moonstone (GB) (Dalakhani)
12 runs · 7 courses · from Jul 2017
As at 21 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 7 Oct 2018 — 2,936 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2018 · 8th of 19 3 wins · Leopardstown
KTB Profile

Nelson (IRE) is 3 from 12 in our archive, including 2 wins at Group 3 level. The biggest win we hold: the Willis Towers Watson Champions Juvenile Stakes at Leopardstown (Sep 2017). Hasn't won since Apr 2018. 3 of 5 starts at Leopardstown have ended in wins.

Based on 12 archived runs · updated 21 Oct 2026
Official rating106↓ 6lb off peak
106 106–112

KTB Speed and Rating

KTB Speed

Best recent Speed 103 the best of the last 3 graded (A or B) runs · Doncaster, 15 Sep 2018

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 10 figures · best 103A · median 88
GoingRunsBestMedianSince 21 Oct 2025
Good5103A85—
Good to Firm298B96.5—
Good to Soft286C64.5—
Heavy1———
DistanceRunsBestMedianSince 21 Oct 2025
1m – 1m1f486C83—
1m2f – 1m4f395B93—
1m5f – 2m2103A100.5—
6f – 7f1———

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 10 figures from 10 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 91A the best of the last 3 rated runs · Ascot, 20 Jun 2018 Official rating 106 at the last run, 15 Sep 2018

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 10 figures · best 106A · median 89
GoingRunsBestMedianSince 21 Oct 2025
Good595B86—
Good to Firm291A86.5—
Good to Soft2106A101.5—
Heavy1———
DistanceRunsBestMedianSince 21 Oct 2025
1m – 1m1f4106A96—
1m2f – 1m4f3100B85—
1m5f – 2m291A89—
6f – 7f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 10 figures from 10 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

Progeny in our archive have won 18% of 7,503 runs since Jan 2008 (875 horses).

Weakest on heavy going: 12.3% from 324. Weakest over 2m1f – 2m4f (all codes): 12.4% from 267.

GoingRunsWinsSRvs sireThis horse
Firm15426.7%+8.7—
Good to Firm1,28025920.2%+2.20 from 2
Good1,91536218.9%+0.91 from 7
Good to Soft1,02017517.2%−0.81 from 2
Soft1,10916214.6%−3.4—
Heavy3244012.3%−5.71 from 1
Standard (AW)1,84034718.9%+0.9—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f641117.2%−0.8—
6f – 7f1,25823618.8%+0.80 from 1
1m – 1m1f1,97336818.7%+0.72 from 4
1m2f – 1m4f2,87854418.9%+0.91 from 5
1m5f – 2m96815115.6%−2.40 from 2
2m1f – 2m4f2673312.4%−5.6—
2m5f – 3m8467.1%−10.9—
Over 3m1100%−18—

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
Moonstone (GB) (Dalakhani)

6 siblings in the archive, 5 winners — best of them Coventry (IRE) (2 wins).

The wins came over 5f–2m4f; the highest grade won is Group 3 (Us Army Ranger (IRE)).

Family form: Coventry (IRE) won at Perth, 24 Sep 2026.

ProduceRunsWinsWin tripsBest grade
Coventry (IRE)4122m–2m4fClass 5
Us Army Ranger (IRE)1221m2f–1m4½fGroup 3
Nevis (IRE)421m–1m3½fListed
Stubbs (IRE)525f–6fListed
Words (IRE)327f–1m4fGroup 3
Flora (IRE)40——

Record by conditions

GoingRunsWinsSR£1
Good 7 1 14% −5.50
Good to Firm 2 0 0% −2.00
Good to Soft 2 1 50% +4.50
Heavy 1 1 100% +1.75

ClassRunsWinsSR£1
Class 1 4 0 0% −4.00

CourseRunsWinsSR£1
Leopardstown 5 3 60% +5.75
Longchamp (FR) 2 0 0% −2.00
Doncaster 1 0 0% −1.00
York 1 0 0% −1.00
Ascot 1 0 0% −1.00
Newmarket 1 0 0% −1.00
Curragh 1 0 0% −1.00

DistanceRunsWinsSR£1
1m2f – 1m4f 5 1 20% −2.25
1m – 1m1f 4 2 50% +4.00
1m5f – 2m 2 0 0% −2.00
6f – 7f 1 0 0% −1.00

JockeyRunsWinsSR£1
Donnacha O'Brien 7 3 43% +3.75
Michael Hussey 3 0 0% −3.00
Ryan Moore 1 0 0% −1.00
Seamie Heffernan 1 0 0% −1.00

SeasonRunsWinsSR£1
2018 7 1 14% −4.25
2017 5 2 40% +3.00

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 ORSpdKTB Jockey SP
07 Oct 18+22d Longchamp (FR) Qatar Prix de l'Arc de Triomphe (3yo+ No Geldings) (Turf) 12f · Good · 19 ran 8/19 nk 8-13 ——— Michael Hussey 100/1
15 Sep 18+24d Doncaster William Hill St Leger Stakes (Group 1) (British Champion Series) Class 1 · 14.5f · Good · 12 ran 7/12 nk 9-1 106103A87A Michael Hussey 50/1
22 Aug 18+39d York Sky Bet Great Voltigeur Stakes (Group 2) Class 1 · 12f · Good To Firm · 9 ran 6/9 3¼ 9-0 10795B82A Michael Hussey 33/1
14 Jul 18+24d Longchamp (FR) Juddmonte Grand Prix de Paris (3yo Colts & Fillies) (Turf) 12f · Good · 6 ran 5/6 2½ 9-3 ——— Donnacha O'Brien 9/1
20 Jun 18+38d Ascot Queen's Vase (Group 2) Class 1 · 14f · Good To Firm · 12 ran 3/12 nk 9-0 11198B91A Donnacha O'Brien 9/2
13 May 18+29d Leopardstown Derrinstown Stud Derby Trial Stakes (Group 3) 10f · Good · 8 ran 6/8 hd 9-3 11290A85A Donnacha O'Brien 5/2
14 Apr 18+196d Leopardstown P.W. McGrath Memorial Ballysax Stakes (Group 3) 10f · Heavy · 4 ran 1/4 9-6 11293C100B Donnacha O'Brien 7/4
30 Sep 17+21d Newmarket Juddmonte Royal Lodge Stakes (Group 2) Class 1 · 8f · Good To Soft · 5 ran 2/5 nk 9-0 11086C97B Ryan Moore 5/6F
09 Sep 17+23d Leopardstown Willis Towers Watson Champions Juvenile Stakes (Group 3) 8f · Good To Yielding · 10 ran 1/10 9-3 —43A106A Donnacha O'Brien 11/2
17 Aug 17+10d Leopardstown Irish Stallion Farms EBF (C & G) Maiden (Plus 10) 8f · Good · 6 ran 1/6 9-5 —85A95B Donnacha O'Brien 1/2F
07 Aug 17+11d Curragh Irish Stallion Farms Ebf Maiden 7f · Good · 13 ran 2/13 2¾ 9-5 —83C86A Donnacha O'Brien 4/5F
27 Jul 17 Leopardstown Frank Conroy Irish EBF Maiden (Plus 10) 8f · Good · 8 ran 6/8 ½ 9-5 —81A79A Seamie Heffernan 6/1

Quick answers

How many races has Nelson (IRE) won?
Nelson (IRE) won 3 of 12 archived starts between 2017 and 2018, a strike rate of 25%. Placed 6 times in total (50% of starts).
Who trained Nelson (IRE)?
Nelson (IRE) was trained by A P O'Brien on the most recent run on record, at Longchamp (FR) on 7 October 2018.
Who is Nelson (IRE)'s sire?
Nelson (IRE) is by Frankel (GB) out of Moonstone (GB), whose sire is Dalakhani.
What going does Nelson (IRE) prefer?
Nelson (IRE) has the best record on good going: 1 win from 7 starts (14.3%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is Nelson (IRE)'s official rating?
Nelson (IRE)'s highest official rating on record is 112.
What is Nelson (IRE)'s sire's record?
Frankel (GB)'s progeny in our archive have won 18% of 7,503 runs since Jan 2008 (875 horses), Flat and jumps together. Weakest on heavy going: 12.3% from 324. Weakest over 2m1f – 2m4f (all codes): 12.4% from 267.
Who are Nelson (IRE)'s siblings?
Out of Moonstone (GB), Nelson (IRE) has 6 other produce in our archive, 5 of them winners. Most wins: Coventry (IRE) (2). Highest grade won: Group 3 (Us Army Ranger (IRE)). The wins came over 5f–2m4f. As at Oct 2026.

Record shown from July 2017. 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.