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Horse profile

Nantucket Bay (USA)

3yo colt (at last run, Oct 2011) · Last trainer A P O'Brien · Last owner Mrs John Magnier
by Giant's Causeway (USA) out of Saudia (USA) (Gone West)
6 runs · 4 courses · from May 2011
As at 28 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 19 Oct 2011 — 5,487 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2011 · 9th of 18 Won at Navan Last raced off OR 90
KTB Profile

Nantucket Bay (USA) is 1 from 6. Hasn't won since May 2011. Last raced off a career-high mark of 90.

Based on 6 archived runs · updated 28 Oct 2026

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 90A the best of the last 3 rated runs · Galway, 25 Jul 2011 Official rating 90 at the last run, 19 Oct 2011

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 6 figures · best 90A · median 74.5
GoingRunsBestMedianSince 28 Oct 2025
Good390A77—
Soft275C73.5—
Good to Firm1———
DistanceRunsBestMedianSince 28 Oct 2025
1m5f – 2m377A75—
1m2f – 1m4f390A74—

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 is derived from in-running commentary, which our data provider does not supply for this horse's races.

Pedigree intelligence

Sire
Giant's Causeway (USA)

Progeny in our archive have won 11.6% of 3,018 runs since Jan 2008 (320 horses).

Weakest on soft going: 7.1% from 394. Weakest over 1m5f – 2m (all codes): 8.3% from 422.

GoingRunsWinsSRvs sireThis horse
Firm3937.7%−3.9—
Good to Firm6058313.7%+2.11 from 1
Good6556710.2%−1.40 from 3
Good to Soft290227.6%−4—
Soft394287.1%−4.50 from 2
Heavy1582012.7%+1.1—
Standard (AW)87712614.4%+2.8—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f27518.5%+6.9—
6f – 7f5957312.3%+0.7—
1m – 1m1f7368912.1%+0.5—
1m2f – 1m4f84610712.6%+10 from 3
1m5f – 2m422358.3%−3.31 from 3
2m1f – 2m4f202199.4%−2.2—
2m5f – 3m123118.9%−2.7—
Over 3m671014.9%+3.3—

Flat and jumps together (all codes) · since Jan 2008 · as at 27 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Saudia (USA) (Gone West)

6 siblings in the archive, 5 winners — best of them Red Duke (USA) (2 wins).

The wins came over 7f–3m; the highest grade won is Group 2 (Red Duke (USA)).

ProduceRunsWinsWin tripsBest grade
Red Duke (USA)1227fGroup 2
Blue Dynasty (USA)2111m2fClass 5
Falcon's Song (USA)511m2fClass 5
Ahwaak (USA)1013mClass 5
The West's Awake (USA)511m4f—
Melodynelson (USA)20——

Record by conditions

GoingRunsWinsSR£1
Good 3 0 0% −3.00
Soft 2 0 0% −2.00
Good to Firm 1 1 100% +3.50

CourseRunsWinsSR£1
Navan 2 1 50% +2.50
Leopardstown 2 0 0% −2.00
Galway 1 0 0% −1.00
Curragh 1 0 0% −1.00

DistanceRunsWinsSR£1
1m5f – 2m 3 1 33% +1.50
1m2f – 1m4f 3 0 0% −3.00

JockeyRunsWinsSR£1
Joseph O'Brien 3 1 33% +1.50
Colm O'Donoghue 1 0 0% −1.00
Miss S O'Brien 1 0 0% −1.00
Kieren Fallon 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 ORKTB Jockey SP
2011 · 6 runs
19 Oct 11+76d Navan www.thetote.com/mobile Handicap (60-90) 13f · Soft · 18 ran 9/18 4¾ 9-6 9075C Colm O'Donoghue 11/2
04 Aug 11+10d Leopardstown Follow Leopardstown On Facebook Handicap (50-90) 16f · Good · 10 ran 3/10 nk 9-0 8777A Joseph O'Brien 5/2J
25 Jul 11+8d Galway Galwaybayhotel.com And Radissonhotelgalway.com Handicap (60-90) 12f · Good · 9 ran 4/9 nk 9-8 8690A Joseph O'Brien 11/4F
17 Jul 11+63d Curragh Thalgo Ladies Derby Handicap (60-100) 12f · Yielding · 13 ran 5/13 3 9-7 8672A Miss S O'Brien 6/1
15 May 11+7d Navan navanracecourse.ie Maiden 13f · Good To Firm · 9 ran 1/9 9-2 —74A Joseph O'Brien 7/2
08 May 11 Leopardstown Follow Leopardstown On Facebook Maiden 12f · Good · 11 ran 4/11 3 9-5 —74A Kieren Fallon 4/1

Quick answers

How many races has Nantucket Bay won?
Nantucket Bay (USA) won 1 of 6 archived starts in 2011, a strike rate of 16.7%. Placed 2 times in total (33.3% of starts).
Who trained Nantucket Bay?
Nantucket Bay (USA) was trained by A P O'Brien on the most recent run on record, at Navan on 19 October 2011.
Who is Nantucket Bay's sire?
Nantucket Bay (USA) is by Giant's Causeway (USA) out of Saudia (USA), whose sire is Gone West.
What is Nantucket Bay's official rating?
The most recent official rating on record is 90, from the run on 19 October 2011. That is also the highest on record.
What is Nantucket Bay's sire's record?
Giant's Causeway (USA)'s progeny in our archive have won 11.6% of 3,018 runs since Jan 2008 (320 horses), Flat and jumps together. Weakest on soft going: 7.1% from 394. Weakest over 1m5f – 2m (all codes): 8.3% from 422.
Who are Nantucket Bay's siblings?
Out of Saudia (USA), Nantucket Bay (USA) has 6 other produce in our archive, 5 of them winners. Most wins: Red Duke (USA) (2). Highest grade won: Group 2 (Red Duke (USA)). The wins came over 7f–3m. As at Oct 2026.

Record shown from May 2011. 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.