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Horse profile

Mendelssohn (USA)

3yo colt (at last run, Mar 2018) · Last trainer A P O'Brien · Last owner Derrick Smith Mrs John Magnier Michael Tabor
by Scat Daddy (USA) out of Leslie's Lady (USA) (Tricky Creek)
5 runs · 4 courses · from Jul 2017
As at 28 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 9 Mar 2018 — 3,154 days ago. Our archive can't say whether the horse is still in training.
Last run Mar 2018 · 1st of 6 Won last time out 2 wins · Dundalk (AW) & Curragh Last raced off OR 116
KTB Profile

Mendelssohn (USA) is 2 from 5, including a Listed win. Won last time out in the 32Red Patton Stakes at Dundalk (AW) — a first Listed win in our archive. Last raced off a career-high mark of 116.

Based on 5 archived runs · updated 28 Oct 2026

Progeny in our archive

Progeny record

As a sire, Mendelssohn (USA)’s progeny in our archive have won 8.2% of 98 runs since Jan 2008 (19 horses).

GoingRunsWinsSRvs sire
Good to Firm1100%−8.2
Good19210.5%+2.3
Good to Soft1218.3%+0.1
Soft1417.1%−1.1
Heavy200%−8.2
Standard (AW)40410%+1.8
Distance (all codes)RunsWinsSRvs sire
Under 6f9111.1%+2.9
6f – 7f24416.7%+8.5
1m – 1m1f4237.1%−1.1
1m2f – 1m4f1300%−8.2
1m5f – 2m600%−8.2
2m1f – 2m4f400%−8.2

Flat and jumps together (all codes) · since Jan 2008 · as at 28 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

KTB Speed and Rating

KTB Speed

Best recent Speed 108 the best of the last 3 graded (A or B) runs · Dundalk (AW), 9 Mar 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 5 figures · best 108A · median 71
GoingRunsBestMedianSince 28 Oct 2025
Good to Firm271C67—
Standard (AW)1———
Good1———
Good to Soft1———
DistanceRunsBestMedianSince 28 Oct 2025
6f – 7f399A71—
1m – 1m1f2108A85.5—

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 5 figures from 5 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 104B the best of the last 3 rated runs · Dundalk (AW), 9 Mar 2018 Official rating 116 at the last run, 9 Mar 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 5 figures · best 104B · median 85
GoingRunsBestMedianSince 28 Oct 2025
Good to Firm285B73—
Standard (AW)1———
Good1———
Good to Soft1———
DistanceRunsBestMedianSince 28 Oct 2025
6f – 7f3101A61—
1m – 1m1f2104B94.5—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 5 figures from 5 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
Scat Daddy (USA)

Progeny in our archive have won 14.2% of 906 runs since Jan 2008 (99 horses).

Strongest on good to firm going: 19.7% from 198. Strongest at trips under 6f (all codes): 27.4% from 124. Weakest over 1m2f – 1m4f (all codes): 7.5% from 134.

GoingRunsWinsSRvs sireThis horse
Firm5120%+5.8—
Good to Firm1983919.7%+5.51 from 2
Good1902412.6%−1.60 from 1
Good to Soft691115.9%+1.70 from 1
Soft8889.1%−5.1—
Heavy16212.5%−1.7—
Standard (AW)3404412.9%−1.31 from 1
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f1243427.4%+13.2—
6f – 7f3475415.6%+1.40 from 3
1m – 1m1f2673111.6%−2.62 from 2
1m2f – 1m4f134107.5%−6.7—
1m5f – 2m3200%−14.2—
2m1f – 2m4f200%−14.2—

Flat and jumps together (all codes) · since Jan 2008 · as at 28 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Leslie's Lady (USA) (Tricky Creek)

No other produce in our archive. It holds racing in Great Britain, Ireland and France from 2005, so siblings racing elsewhere won’t appear here.

Record by conditions

GoingRunsWinsSR£1
Good to Firm 2 1 50% +0.25
Standard (AW) 1 1 100% +1.00
Good 1 0 0% −1.00
Good to Soft 1 0 0% −1.00

ClassRunsWinsSR£1
Class 1 2 0 0% −2.00

CourseRunsWinsSR£1
Curragh 2 1 50% +0.25
Dundalk (AW) 1 1 100% +1.00
Newmarket 1 0 0% −1.00
Doncaster 1 0 0% −1.00

DistanceRunsWinsSR£1
6f – 7f 3 0 0% −3.00
1m – 1m1f 2 2 100% +2.25

JockeyRunsWinsSR£1
Ryan Moore 3 2 67% +1.25
Wayne Lordan 2 0 0% −2.00

HeadgearRunsWinsSR£1
None 3 1 33% −0.75
Blinkers 2 1 50% +0.00

SeasonRunsWinsSR£1
2018 1 1 100% +1.00
2017 4 1 25% −1.75

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
2018 · 1 run
09 Mar 18+146d Dundalk (AW) 32Red Patton Stakes (Listed) 8f · Standard · 6 ran 1/6 9-8 116108A104B Ryan Moore EvensF
2017 · 4 runs
14 Oct 17+28d Newmarket Darley Dewhurst Stakes (Group 1) Class 1 · 7f · Good · 9 ran 2/9 2½ 9-1 —99A101A Wayne Lordan 50/1
16 Sep 17+34d Doncaster Howcroft Industrial Supplies Champagne Stakes (Group 2) Class 1 · 7f · Good To Soft · 7 ran 7/7 22 9-0 —18C56C Ryan Moore 9/1
13 Aug 17+29d Curragh Anglesey Lodge Equine Hospital Irish European Breeders Fund Maiden (Plus 10) 8f · Good To Firm · 7 ran 1/7 9-5 —63A85B Ryan Moore 5/4F
15 Jul 17 Curragh Club Godolphin Irish European Breeders Fund Maiden 7f · Good To Firm · 13 ran 8/13 2¼ 9-5 —71C61C Wayne Lordan 10/1

Quick answers

How many races has Mendelssohn won?
Mendelssohn (USA) won 2 of 5 archived starts between 2017 and 2018, a strike rate of 40%. Placed 3 times in total (60% of starts).
Who trained Mendelssohn?
Mendelssohn (USA) was trained by A P O'Brien on the most recent run on record, at Dundalk (AW) on 9 March 2018.
Who is Mendelssohn's sire?
Mendelssohn (USA) is by Scat Daddy (USA) out of Leslie's Lady (USA), whose sire is Tricky Creek.
What is Mendelssohn's official rating?
The most recent official rating on record is 116, from the run on 9 March 2018. That is also the highest on record.
What is Mendelssohn's sire's record?
Scat Daddy (USA)'s progeny in our archive have won 14.2% of 906 runs since Jan 2008 (99 horses), Flat and jumps together. Strongest on good to firm going: 19.7% from 198. Strongest at trips under 6f (all codes): 27.4% from 124. Weakest over 1m2f – 1m4f (all codes): 7.5% from 134.
Has Mendelssohn sired winners?
As a sire, Mendelssohn (USA)'s progeny in our archive have won 8.2% of 98 runs since Jan 2008 (19 horses), Flat and jumps together.

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.