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Horse profile

Rio Antoinette (IRE)

2yo filly (at last run, Sep 2011) · Last trainer William Hayes · Last owner James Gerard Hayes
by Captain Rio (GB) out of Sofia Aurora (USA) (Chief Honcho)
3 runs · 3 courses · from Aug 2011
As at 5 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 12 Sep 2011 — 5,533 days ago. Our archive can't say whether the horse is still in training.
Last run Sep 2011 · 12th of 12
KTB Profile

Rio Antoinette (IRE) is yet to win from 3 starts.

Based on 3 archived runs · updated 5 Nov 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 51C the best of the last 3 rated runs · Listowel, 12 Sep 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 — 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 3 figures · best 51C · median 41
GoingRunsBestMedianSince 5 Nov 2025
Soft1———
Good to Firm1———
Good1———
DistanceRunsBestMedianSince 5 Nov 2025
6f – 7f251C39.5—
Under 6f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 3 figures from 3 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
Captain Rio (GB)

Progeny in our archive have won 9.5% of 6,912 runs since Jan 2008 (423 horses).

GoingRunsWinsSRvs sireThis horse
Firm71811.3%+1.8—
Good to Firm1,21313010.7%+1.20 from 1
Good1,4201228.6%−0.90 from 1
Good to Soft773628%−1.5—
Soft1,04311410.9%+1.40 from 1
Heavy3764211.2%+1.7—
Standard (AW)2,0161819%−0.5—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f1,62816710.3%+0.80 from 1
6f – 7f3,0222889.5%00 from 2
1m – 1m1f953768%−1.5—
1m2f – 1m4f485469.5%0—
1m5f – 2m5625710.1%+0.6—
2m1f – 2m4f211209.5%0—
2m5f – 3m43511.6%+2.1—
Over 3m800%−9.5—

Flat and jumps together (all codes) · since Jan 2008 · as at 5 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Sofia Aurora (USA) (Chief Honcho)

8 siblings in the archive, 5 winners — best of them Rodriguez (IRE) (5 wins).

The wins came over 6f–3m; the highest grade won is Class 5 (Outrageous Flirt (IRE)).

ProduceRunsWinsWin tripsBest grade
Rodriguez (IRE)4151m2½f–3m—
Outrageous Flirt (IRE)2236f–1mClass 5
Supasunrise (IRE)3122m4fClass 5
Lady From Ige (IRE)821m3f—
Arctic Sofia (IRE)2512m—
Conn Job (IRE)110——
Star of Sophia (IRE)50——
Faith's Aurora (IRE)30——

Record by conditions

GoingRunsWinsSR£1
Soft 1 0 0% −1.00
Good to Firm 1 0 0% −1.00
Good 1 0 0% −1.00

CourseRunsWinsSR£1
Listowel 1 0 0% −1.00
Cork 1 0 0% −1.00
Sligo 1 0 0% −1.00

DistanceRunsWinsSR£1
6f – 7f 2 0 0% −2.00
Under 6f 1 0 0% −1.00

JockeyRunsWinsSR£1
Michael Hussey 1 0 0% −1.00
Gary Carroll 1 0 0% −1.00
Danny Grant 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 KTB Jockey SP
2011 · 3 runs
12 Sep 11+21d Listowel Irish Stallion Farms E.B.F. Fillies Maiden 6½f · Soft · 12 ran 12/12 5½ 9-0 51C Michael Hussey 66/1
22 Aug 11+19d Cork Irish Stallion Farms E.B.F. Maiden 5f · Good To Firm · 12 ran 12/12 8 8-12 41C Gary Carroll 100/1
03 Aug 11 Sligo Irish Stallion Farms E.B.F. Auction Maiden 6½f · Good · 14 ran 13/14 3½ 8-6 28C Danny Grant 66/1

Quick answers

How many races has Rio Antoinette won?
Rio Antoinette (IRE) has yet to win, from 3 archived starts in 2011.
Who trained Rio Antoinette?
Rio Antoinette (IRE) was trained by William Hayes on the most recent run on record, at Listowel on 12 September 2011.
Who is Rio Antoinette's sire?
Rio Antoinette (IRE) is by Captain Rio (GB) out of Sofia Aurora (USA), whose sire is Chief Honcho.
What is Rio Antoinette's sire's record?
Captain Rio (GB)'s progeny in our archive have won 9.5% of 6,912 runs since Jan 2008 (423 horses), Flat and jumps together.
Who are Rio Antoinette's siblings?
Out of Sofia Aurora (USA), Rio Antoinette (IRE) has 8 other produce in our archive, 5 of them winners. Most wins: Rodriguez (IRE) (5). Highest grade won: Class 5 (Outrageous Flirt (IRE)). The wins came over 6f–3m. As at Nov 2026.

Record shown from August 2011. 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.