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Horse profile

South Dakota (IRE)

2yo colt · Trainer Aidan O'Brien · Owner M Tabor D Smith Mrs J Magnier Westerberg
by St Mark's Basilica (FR) out of Palace (IRE) (Fastnet Rock)
6 runs · 6 courses · from May 2026
As at 8 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
Won at Roscommon (IRE) Last run 2 Oct 2026 · 7th of 10 Last raced off OR 98
KTB Profile

South Dakota is a colt by St Mark's Basilica out of a Fastnet Rock mare who has won one of six starts. He took an Irish EBF Median Sires Series Race at Roscommon in Aug 2026 over 6f-7f on soft ground off an official rating of 95. All five subsequent runs have come without success, including his last run at Dundalk in Oct 2026 when he finished seventh of 10 in a Class 1 race off a career-high mark of 98. He has raced on five different courses.

Based on 6 archived runs · run-style from 5 commented runs since May 2026 · updated 8 Nov 2026

KTB Speed and Rating

KTB Speed

Best recent Speed 104 the best of the last 3 graded (A or B) runs · Dundalk (AW) (IRE), 2 Oct 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 6 figures · best 104A · median 80.5
GoingRunsBestMedianSince 8 Nov 2025
Good388A733 runs · 88 / 73
Standard (AW)1——1 run · —
Soft1——1 run · —
Good to Firm1——1 run · —
DistanceRunsBestMedianSince 8 Nov 2025
6f – 7f5104A885 runs · 104 / 88
1m – 1m1f1——1 run · —

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 6 figures from 6 runs · as at 10 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 102A the best of the last 3 rated runs · Roscommon (IRE), 31 Aug 2026 Official rating 98 at the last run, 2 Oct 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 6 figures · best 102A · median 89
GoingRunsBestMedianSince 8 Nov 2025
Good391A803 runs · 91 / 80
Standard (AW)1——1 run · —
Soft1——1 run · —
Good to Firm1——1 run · —
DistanceRunsBestMedianSince 8 Nov 2025
6f – 7f5102A915 runs · 102 / 91
1m – 1m1f1——1 run · —

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 6 figures from 6 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 5 analysed runs since May 2026

  • Mid-division 2 (40%) · 0 wins
  • Held up 2 (40%) · 0 wins
  • Prominent 1 (20%) · 1 win

Pedigree intelligence

Sire

Progeny in our archive have won 14.4% of 659 runs since Apr 2025 (147 horses).

Weakest on good going: 9.2% from 152. Strongest over 1m – 1m1f (all codes): 18% from 228.

GoingRunsWinsSRvs sireThis horse
Firm200%−14.4—
Good to Firm1021716.7%+2.30 from 1
Good152149.2%−5.20 from 3
Good to Soft751925.3%+10.9—
Soft1101715.5%+1.11 from 1
Heavy20315%+0.6—
Standard (AW)1982512.6%−1.80 from 1
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f3239.4%−5—
6f – 7f2813512.5%−1.91 from 5
1m – 1m1f2284118%+3.60 from 1
1m2f – 1m4f1071413.1%−1.3—
1m5f – 2m8225%+10.6—
2m1f – 2m4f300%−14.4—

Flat and jumps together (all codes) · since Apr 2025 · as at 8 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Palace (IRE) (Fastnet Rock)

5 siblings in the archive, 4 winners — best of them Royal Aide (IRE) (4 wins).

The wins came over 7f–3m1f; the highest grade won is Group 2 (High Definition (IRE)).

Family form: House Of Tudor (IRE) won at Saint-Cloud (FR), 14 Oct 2026.

ProduceRunsWinsWin tripsBest grade
Royal Aide (IRE)2141m3f–3m1f—
High Definition (IRE)1831m–2mGroup 2
Innisfree (IRE)627f–1mGroup 2
House Of Tudor (IRE)321m2f–1m4f—
Hypnosis (IRE)30——

Record by conditions

GoingRunsWinsSR£1
Good 3 0 0% −3.00
Standard (AW) 1 0 0% −1.00
Soft 1 1 100% +3.00
Good to Firm 1 0 0% −1.00

ClassRunsWinsSR£1
Class 1 2 0 0% −2.00

CourseRunsWinsSR£1
Dundalk (AW) (IRE) 1 0 0% −1.00
Roscommon (IRE) 1 1 100% +3.00
Naas (IRE) 1 0 0% −1.00
Killarney (IRE) 1 0 0% −1.00
Ascot 1 0 0% −1.00
Curragh 1 0 0% −1.00

DistanceRunsWinsSR£1
6f – 7f 5 1 20% −1.00
1m – 1m1f 1 0 0% −1.00

JockeyRunsWinsSR£1
Wayne Lordan 4 1 25% +0.00
W. M. Lordan 1 0 0% −1.00
Jack Cleary 1 0 0% −1.00

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
2026 · 6 runs
02 Oct 26+32d Dundalk (AW) (IRE) Irish Stallion Farms EBF Star Appeal Stakes (Listed) Class 1 · 7f · Standard · 10 ran 7/10 nk 9-5 98104A87A W. M. Lordan 7/2
31 Aug 26+28d Roscommon (IRE) Irish EBF Median Sires Series Race 7½f · Yielding · 9 ran Handy in behind early - third at halfway - driven into second spot with two furlongs left - hit front a furlong out under urging - challenged hard in closing yards to hold on 1/9 9-8 95101A102A Wayne Lordan 3/1
03 Aug 26+19d Naas (IRE) Irish EBF Ballyhane Stakes (Median Sires Series) 6f · Good · 11 ran Held a midfield position early - urged on with 2f left but made little headway inside the final stages - stayed on steadily to snatch 3rd near the line 3/11 1¾ 9-8 9688A91A Wayne Lordan 7/2
15 Jul 26+27d Killarney (IRE) Irish EBF Median Sires Series Race 1m · Good · 5 ran sluggish leaving the stalls - settled towards the back - 4th at halfway - shaken up with 3f to run - driven and improved into 3rd inside the final 2f - found nothing more in the final furlong and stuck on without a change of gear 3/5 2 9-8 —73C80B Wayne Lordan 8/11F
18 Jun 26+26d Ascot Chesham Stakes (Listed) Class 1 · 7f · Good To Firm · 14 ran Settled in the pack early - made progress over 2f out and pressed on under the whip - stayed on same gear to finish 4th beaten a length and a half 4/14 ¾ 9-5 —73C99A Wayne Lordan 10/3F
23 May 26 Curragh Tally Ho Stud Irish European Breeders Fund (C & G) Maiden 6f · Good · 8 ran Held up towards the back - urged forward with over two furlongs left - responded to reach 4th near the line 4/8 3¼ 9-0 —40A69A Jack Cleary 8/1

Quick answers

How many races has South Dakota won?
South Dakota (IRE) won 1 of 6 archived starts in 2026, a strike rate of 16.7%. Placed 2 times in total (33.3% of starts).
Who trains South Dakota?
South Dakota (IRE) is trained by Aidan O'Brien, who saddled the horse on its most recent run on 2 October 2026.
Who is South Dakota's sire?
South Dakota (IRE) is by St Mark's Basilica (FR) out of Palace (IRE), whose sire is Fastnet Rock.
What is South Dakota's official rating?
The most recent official rating on record is 98, from the run on 2 October 2026. That is also the highest on record.
What is South Dakota's sire's record?
St Mark's Basilica (FR)'s progeny in our archive have won 14.4% of 659 runs since Apr 2025 (147 horses), Flat and jumps together. Weakest on good going: 9.2% from 152. Strongest over 1m – 1m1f (all codes): 18% from 228.
Who are South Dakota's siblings?
Out of Palace (IRE), South Dakota (IRE) has 5 other produce in our archive, 4 of them winners. Most wins: Royal Aide (IRE) (4). Highest grade won: Group 2 (High Definition (IRE)). The wins came over 7f–3m1f. As at Nov 2026.

Record shown from May 2026. 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.