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Horse profile

A Boy Named Susie (IRE)

3yo colt · Trainer Donnacha Aidan O'Brien · Owner Ana Obrien
by Starspangledbanner (AUS) out of Soho Susie (IRE) (Montjeu)
10 runs · 8 courses · from Jul 2025
As at 8 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
2 wins · Curragh (IRE) & Killarney Last run 12 Sep 2026 · 5th of 8 Last raced off OR 117
KTB Profile

A Boy Named Susie (IRE) is 2 from 10, including a Group 3 win. The biggest win we hold: the Newbridge Silverware Royal Whip Stakes at Curragh (IRE) (Aug 2026). Each win came on a first visit to the course.

Based on 10 archived runs · run-style from 9 commented runs since Jul 2025 · updated 8 Nov 2026
Official rating117↓ 1lb off peak
117 99–118

KTB Speed and Rating

KTB Speed

Best recent Speed 119 the best of the last 3 graded (A or B) runs · Sandown, 4 Jul 2026

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 8 figures · best 119A · median 102.5
GoingRunsBestMedianSince 8 Nov 2025
Good3114A1092 runs · 114 / 111.5
Good to Soft296A781 run · —
Soft2116A75.5—
Good to Firm1——1 run · —
DistanceRunsBestMedianSince 8 Nov 2025
1m2f – 1m4f4119A111.54 runs · 119 / 111.5
1m – 1m1f3116A60—
6f – 7f1———

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 8 figures from 8 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 105A the best of the last 3 rated runs · Sandown, 4 Jul 2026 Official rating 117 at the last run, 12 Sep 2026

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 8 figures · best 105A · median 97.5
GoingRunsBestMedianSince 8 Nov 2025
Good399B962 runs · 99 / 97.5
Good to Soft296A931 run · —
Soft2105A103—
Good to Firm1——1 run · —
DistanceRunsBestMedianSince 8 Nov 2025
1m2f – 1m4f4105A97.54 runs · 105 / 97.5
1m – 1m1f3105A101—
6f – 7f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 8 figures from 8 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 from 9 analysed runs since Jul 2025

  • Held up 4 (44%) · 0 wins
  • Led 2 (22%) · 2 wins
  • Mid-division 2 (22%) · 0 wins
  • Prominent 1 (11%) · 0 wins

Pedigree intelligence

Sire

Progeny in our archive have won 11.1% of 7,225 runs since May 2014 (664 horses).

Strongest at trips under 6f (all codes): 14.6% from 1,199.

GoingRunsWinsSRvs sireThis horse
Firm25312%+0.9—
Good to Firm1,03412512.1%+10 from 1
Good1,73818310.5%−0.61 from 4
Good to Soft7839111.6%+0.50 from 2
Soft1,08512411.4%+0.31 from 3
Heavy2953311.2%+0.1—
Standard (AW)2,26524510.8%−0.3—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f1,19917514.6%+3.5—
6f – 7f3,59439911.1%00 from 1
1m – 1m1f1,4101399.9%−1.21 from 3
1m2f – 1m4f653619.3%−1.81 from 6
1m5f – 2m272269.6%−1.5—
2m1f – 2m4f8444.8%−6.3—
2m5f – 3m1300%−11.1—

Flat and jumps together (all codes) · since May 2014 · as at 8 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Soho Susie (IRE) (Montjeu)

4 siblings in the archive, 2 winners — best of them Seagolazo (IRE) (1 win).

The wins came over 6f–7f; the highest grade won is Class 4 (Seagolazo (IRE)).

ProduceRunsWinsWin tripsBest grade
Seagolazo (IRE)1817fClass 4
Zephina (GB)1616fClass 5
French Romance (GB)90——
Orbois (GB)10——

Record by conditions

GoingRunsWinsSR£1
Good 4 1 25% −2.86
Soft 3 1 33% +1.33
Good to Soft 2 0 0% −2.00
Good to Firm 1 0 0% −1.00

ClassRunsWinsSR£1
Class 1 3 1 33% −1.86

CourseRunsWinsSR£1
Leopardstown 3 0 0% −3.00
Leopardstown (IRE) 1 0 0% −1.00
Curragh (IRE) 1 1 100% +0.14
Sandown 1 0 0% −1.00
Chantilly (FR) 1 0 0% −1.00
Saint-Cloud (FR) 1 0 0% −1.00
Curragh 1 0 0% −1.00
Killarney 1 1 100% +3.33

DistanceRunsWinsSR£1
1m2f – 1m4f 6 1 17% −4.86
1m – 1m1f 3 1 33% +1.33
6f – 7f 1 0 0% −1.00

JockeyRunsWinsSR£1
Oisin Murphy 4 1 25% −2.86
Gavin Ryan 3 1 33% +1.33
Maxime Guyon 1 0 0% −1.00
Mickael Barzalona 1 0 0% −1.00
Chris Hayes 1 0 0% −1.00

SeasonRunsWinsSR£1
2026 5 1 20% −3.86
2025 5 1 20% −0.67

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
2026 · 5 runs
12 Sep 26+27d Leopardstown (IRE) Royal Bahrain Irish Champion Stakes (Group 1) Class 1 · 1m2f · Good · 8 ran Settled towards the back early - improved position entering straight - driven through to third a furlong out but checked in run - unable to find more late finishing 5th beaten 2.75L 5/8 ¾ 9-3 117114A96A Oisin Murphy 9/1
16 Aug 26+43d Curragh (IRE) Newbridge Silverware Royal Whip Stakes (Group 3) Class 1 · 1m2f · Good · 4 ran Quick start into second spot to halfway - asked for effort to hit the front two out - stormed away inside the last for a comfortable win 1/4 9-2 118109C99B Oisin Murphy 1/7F
04 Jul 26+34d Sandown Coral-Eclipse (Group 1) Class 1 · 1m2f · Good To Firm · 7 ran Settled towards the back early - still coping well with proceedings 3f out - asked for effort soon after - improved into second approaching the final furlong - kept on without gaining further inside the last 2/7 3 8-13 114119A105A Oisin Murphy 20/1
31 May 26+49d Chantilly (FR) Qatar Prix du Jockey Club (No Geldings) (Turf) 1m2½f · Good · 16 ran Raced wide early - held up in rear - not clear run over 2f out - headway against far rail inside final furlong - ran on final 110yds 4/16 1¾ 9-2 107—— Maxime Guyon 37/1
12 Apr 26+168d Leopardstown P.W. McGrath Memorial Ballysax Stakes (Group 3) 1m2f · Good To Yielding · 9 ran Settled in the pack early - urged into 6th spot 2f out and again with a furlong left - closed strongly to 3rd close home - kept finding late but couldn't get closer - finished third 3/9 ½ 9-5 10796A96A Oisin Murphy 11/2
2025 · 5 runs
26 Oct 25+8d Saint-Cloud (FR) Criterium de Saint-Cloud (2yo Colts & Fillies) (Turf) 1m2f · Very Soft · 10 ran 2/10 2 9-0 ——— Mickael Barzalona 14/1
18 Oct 25+35d Leopardstown Mongey Communications Eyrefield Stakes (Group 3) 1m1f · Yielding · 8 ran Held up towards the back early - 6th at halfway and 4th into the straight - pushed along to move up and take command a furlong out - stayed on strongly close home - caught right on the line to finish second 2/8 shd 9-5 99116A105A Chris Hayes 12/1
13 Sep 25+21d Leopardstown KPMG Champions Juvenile Stakes (Group 2) 1m · Good To Yielding · 4 ran Sat just behind the front pair in 3rd - pushed along 2f out but couldn't find extra - faded into last close home 4/4 nse 9-5 —60C90B Gavin Ryan 17/2
23 Aug 25+38d Curragh Coolmore Stud Wootton Bassett Tom Cooper Irish European Breeders Fund Futurity Stakes (Group 2) 7f · Good · 5 ran Settled midfield early - up to 3rd by halfway - unable to threaten front pair over a furlong out - eased back to 4th inside final 150 yards and finished without further response 4/5 1½ 9-5 —81C89B Gavin Ryan 8/1
16 Jul 25 Killarney Irish EBF Median Sires Series Race 1m · Soft · 6 ran Shared front early - eased back to sit close up after the opening furlong - driven to the front with a furlong left - edged clear inside the last - won comfortably 1/6 9-8 —35A101B Gavin Ryan 10/3

Quick answers

How many races has A Boy Named Susie won?
A Boy Named Susie (IRE) won 2 of 10 archived starts between 2025 and 2026, a strike rate of 20%. Placed 6 times in total (60% of starts).
Who trains A Boy Named Susie?
A Boy Named Susie (IRE) is trained by Donnacha Aidan O'Brien, who saddled the horse on its most recent run on 12 September 2026.
Who is A Boy Named Susie's sire?
A Boy Named Susie (IRE) is by Starspangledbanner (AUS) out of Soho Susie (IRE), whose sire is Montjeu.
What going does A Boy Named Susie prefer?
A Boy Named Susie (IRE) has the best record on soft going: 1 win from 3 starts (33.3%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is A Boy Named Susie's official rating?
The most recent official rating on record is 117, from the run on 12 September 2026. The highest on record is 118.
What is A Boy Named Susie's sire's record?
Starspangledbanner (AUS)'s progeny in our archive have won 11.1% of 7,225 runs since May 2014 (664 horses), Flat and jumps together. Strongest at trips under 6f (all codes): 14.6% from 1,199.
Who are A Boy Named Susie's siblings?
Out of Soho Susie (IRE), A Boy Named Susie (IRE) has 4 other produce in our archive, 2 of them winners. Most wins: Seagolazo (IRE) (1). Highest grade won: Class 4 (Seagolazo (IRE)). The wins came over 6f–7f. As at Nov 2026.

Record shown from July 2025. 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.