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Horse profile

Leinster House (USA)

2yo colt (at last run, Oct 2021) · Last trainer A P O'Brien · Last owner Westerberg Mrs J Magnier M Tabor D Smith
by War Front (USA) out of Ballydoyle (IRE) (Galileo)
2 runs · 2 courses · from Sep 2021
As at 28 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 1 Oct 2021 — 1,852 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2021 · 5th of 11 Won at Naas
KTB Profile

Lightly raced, with 2 archived starts between Sep 2021 and Oct 2021, the last of them as a 2yo colt. Finished 5 of 11 at Dundalk (AW) last time. By War Front (USA), whose progeny in our archive have won 15.7% of 2,496 runs since Jan 2008.

Based on 2 archived runs · updated 28 Oct 2026

KTB Speed and Rating

KTB Speed

Best recent Speed 82 the best of the last 2 graded (A or B) runs · Naas, 16 Sep 2021

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 2 figures · best 82A · median 81
GoingRunsBestMedianSince 28 Oct 2025
Standard (AW)1———
Good1———
DistanceRunsBestMedianSince 28 Oct 2025
6f – 7f282A81—

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 2 figures from 2 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 88A the best of the last 2 rated runs · Dundalk (AW), 1 Oct 2021

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 2 figures · best 88A · median 86
GoingRunsBestMedianSince 28 Oct 2025
Standard (AW)1———
Good1———
DistanceRunsBestMedianSince 28 Oct 2025
6f – 7f288A86—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 2 figures from 2 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
War Front (USA)

Progeny in our archive have won 15.7% of 2,496 runs since Jan 2008 (297 horses).

Strongest on standard (aw) going: 18.9% from 923. Weakest on good going: 10.9% from 533. Strongest over 6f – 7f (all codes): 19.3% from 1,009.

GoingRunsWinsSRvs sireThis horse
Firm14321.4%+5.7—
Good to Firm4758317.5%+1.8—
Good5335810.9%−4.81 from 1
Good to Soft2273716.3%+0.6—
Soft2813211.4%−4.3—
Heavy43511.6%−4.1—
Standard (AW)92317418.9%+3.20 from 1
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f1713017.5%+1.8—
6f – 7f1,00919519.3%+3.61 from 2
1m – 1m1f81510512.9%−2.8—
1m2f – 1m4f3805614.7%−1—
1m5f – 2m9455.3%−10.4—
2m1f – 2m4f2414.2%−11.5—
2m5f – 3m300%−15.7—

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

3 siblings in the archive, 2 winners — best of them Red Riding Hood (IRE) (2 wins).

The wins came over 7f–1m2½f; the highest grade won is Group 3 (Red Riding Hood (IRE)).

ProduceRunsWinsWin tripsBest grade
Red Riding Hood (IRE)1121m1f–1m2½fGroup 3
Monday (USA)317fListed
Hereafter (IRE)10——

Too few runs for meaningful splits. The full record is below.

Form

DateCourseRace PosBtn Wgt SpdKTB Jockey SP
2021 · 2 runs
01 Oct 21+15d Dundalk (AW) Irish Stallion Farms EBF Star Appeal Stakes (Listed) 7f · Standard · 11 ran 5/11 ½ 9-5 80A88A Seamie Heffernan 7/1
16 Sep 21 Naas Irish Stallion Farms EBF (C & G) Maiden 6f · Good · 11 ran 1/11 9-5 82A84A Seamie Heffernan 4/1

Quick answers

How many races has Leinster House won?
Leinster House (USA) won 1 of 2 archived starts in 2021, a strike rate of 50%. Placed 1 time in total (50% of starts).
Who trained Leinster House?
Leinster House (USA) was trained by A P O'Brien on the most recent run on record, at Dundalk (AW) on 1 October 2021.
Who is Leinster House's sire?
Leinster House (USA) is by War Front (USA) out of Ballydoyle (IRE), whose sire is Galileo.
What is Leinster House's sire's record?
War Front (USA)'s progeny in our archive have won 15.7% of 2,496 runs since Jan 2008 (297 horses), Flat and jumps together. Strongest on standard (aw) going: 18.9% from 923. Weakest on good going: 10.9% from 533. Strongest over 6f – 7f (all codes): 19.3% from 1,009.
Who are Leinster House's siblings?
Out of Ballydoyle (IRE), Leinster House (USA) has 3 other produce in our archive, 2 of them winners. Most wins: Red Riding Hood (IRE) (2). Highest grade won: Group 3 (Red Riding Hood (IRE)). The wins came over 7f–1m2½f. As at Oct 2026.

Record shown from September 2021. 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.