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Horse profile

Piazza San Marco (USA)

3yo colt · Trainer A P O'Brien · Owner Derrick Smith Mrs John Magnier Michael Tabor
by St Mark's Basilica (FR) out of Willow (IRE) (American Pharoah)
6 runs · 5 courses · from Jun 2025
As at 1 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
Won at Galway Last run 12 Sep 2026 · 7th of 10 Last raced off OR 102
KTB Profile

Piazza San Marco (USA) is 1 from 6.

Based on 6 archived runs · run-style from 5 commented runs since Jun 2025 · updated 1 Nov 2026

KTB Speed and Rating

KTB Speed

Best recent Speed 112 the best of the last 3 graded (A or B) runs · Leopardstown, 18 Oct 2025

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 113A · median 89
GoingRunsBestMedianSince 1 Nov 2025
Good286A721 run · —
Soft2113A112.5—
Good to Soft1——1 run · —
DistanceRunsBestMedianSince 1 Nov 2025
1m – 1m1f2113A112.5—
1m2f – 1m4f1——1 run · —
1m5f – 2m1——1 run · —
6f – 7f1———

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 98A the best of the last 3 rated runs · Leopardstown, 18 Oct 2025 Official rating 102 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 5 figures · best 99A · median 86
GoingRunsBestMedianSince 1 Nov 2025
Good286A75.51 run · —
Soft299A98.5—
Good to Soft1——1 run · —
DistanceRunsBestMedianSince 1 Nov 2025
1m – 1m1f299A98.5—
1m2f – 1m4f1——1 run · —
1m5f – 2m1——1 run · —
6f – 7f1———

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 from 5 analysed runs since Jun 2025

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

Pedigree intelligence

Sire

Progeny in our archive have won 14.2% of 649 runs since Apr 2025 (145 horses).

Weakest on good going: 9.2% from 152. Strongest over 1m – 1m1f (all codes): 17.8% from 225.

GoingRunsWinsSRvs sireThis horse
Firm200%−14.2—
Good to Firm1021716.7%+2.5—
Good152149.2%−50 from 2
Good to Soft741824.3%+10.10 from 1
Soft1091614.7%+0.51 from 3
Heavy19315.8%+1.6—
Standard (AW)1912412.6%−1.6—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f3239.4%−4.8—
6f – 7f2753412.4%−1.80 from 1
1m – 1m1f2254017.8%+3.61 from 3
1m2f – 1m4f1071413.1%−1.10 from 1
1m5f – 2m7114.3%+0.10 from 1
2m1f – 2m4f300%−14.2—

Flat and jumps together (all codes) · since Apr 2025 · as at 31 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Willow (IRE) (American Pharoah)

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
Soft 3 1 33% −0.80
Good 2 0 0% −2.00
Good to Soft 1 0 0% −1.00

ClassRunsWinsSR£1
Class 1 2 0 0% −2.00

CourseRunsWinsSR£1
Leopardstown (IRE) 2 0 0% −2.00
Saint-Cloud (FR) 1 0 0% −1.00
Leopardstown 1 0 0% −1.00
Galway 1 1 100% +1.20
Fairyhouse 1 0 0% −1.00

DistanceRunsWinsSR£1
1m – 1m1f 3 1 33% −0.80
1m2f – 1m4f 1 0 0% −1.00
1m5f – 2m 1 0 0% −1.00
6f – 7f 1 0 0% −1.00

JockeyRunsWinsSR£1
Ronan Whelan 4 1 25% −1.80
Ryan Moore 1 0 0% −1.00
Wayne Lordan 1 0 0% −1.00

SeasonRunsWinsSR£1
2026 2 0 0% −2.00
2025 4 1 25% −1.80

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 · 2 runs
12 Sep 26+23d Leopardstown (IRE) World Pool Bet With The Tote Kilternan Stakes (Group 3) Class 1 · 1m4f · Good · 10 ran Sat close to the front group early - 3rd at halfway - asked for effort in the straight and 4th with a furlong left - held no more late to finish 7th 7/10 hd 9-1 10286A86A Ryan Moore 22/1
20 Aug 26+298d Leopardstown (IRE) Bet With Tote On Racing & Sports Irish EBF Vinnie Roe Stakes (Listed) Class 1 · 1m6f · Good To Yielding · 9 ran Settled in the pack midfield - pushed along to make ground into the straight - up to 4th with 2f left - unable to threaten those ahead over 1f out - stayed on at one gait to snatch 3rd near the line 3/9 1¾ 9-7 10589A84A Wayne Lordan 5/1
2025 · 4 runs
26 Oct 25+8d Saint-Cloud (FR) Criterium International (2yo Colts & Fillies) (Turf) 1m · Very Soft · 7 ran 6/7 nk 9-0 ——— Ronan Whelan 19/1
18 Oct 25+39d Leopardstown Mongey Communications Eyrefield Stakes (Group 3) 1m1f · Yielding · 8 ran Shared front spot early - urged into command entering the straight - overtaken a furlong out and dropped to third with little response - unable to find more late and finished fourth 4/8 ¾ 9-5 —112A98A Ronan Whelan 11/10F
09 Sep 25+95d Galway Irish Stallion Farms EBF Maiden 1m½f · Soft · 8 ran Set the pace from the off - challenged early - lead of a length by halfway - urged along 2f out - pulled clear inside final furlong - stayed on strongly to score 1/8 9-7 —113A99A Ronan Whelan 6/5F
06 Jun 25 Fairyhouse Irish Stallion Farms EBF Maiden 7f · Good · 11 ran Held up towards the back of the pack - still 8th at halfway despite being pushed for a response - made no dent on the leaders with 1½f left - stayed on same pace to finish 7th 7/11 2¾ 9-7 —58A65A Ronan Whelan 11/2

Quick answers

How many races has Piazza San Marco won?
Piazza San Marco (USA) won 1 of 6 archived starts between 2025 and 2026, a strike rate of 16.7%. Placed 2 times in total (33.3% of starts).
Who trains Piazza San Marco?
Piazza San Marco (USA) is trained by A P O'Brien, who saddled the horse on its most recent run on 12 September 2026.
Who is Piazza San Marco's sire?
Piazza San Marco (USA) is by St Mark's Basilica (FR) out of Willow (IRE), whose sire is American Pharoah.
What going does Piazza San Marco prefer?
Piazza San Marco (USA) 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 Piazza San Marco's official rating?
The most recent official rating on record is 102, from the run on 12 September 2026. The highest on record is 105.
What is Piazza San Marco's sire's record?
St Mark's Basilica (FR)'s progeny in our archive have won 14.2% of 649 runs since Apr 2025 (145 horses), Flat and jumps together. Weakest on good going: 9.2% from 152. Strongest over 1m – 1m1f (all codes): 17.8% from 225.

Record shown from June 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.