Coo Star Sivola (FR)
Coo Star Sivola won four of 32 starts on turf, including the Grade 3 Ultima Handicap Chase at Cheltenham over 3m on heavy ground in Mar 2018. He also landed a Class 1 novices hurdle at the same course in Jan 2017. The gelding, aged 11 at his last run in May 2023, finished third of eight in a Class 4 handicap chase at Bangor-on-Dee off an official rating of 112, 38lb below his highest ever mark.
- 4–32Wins / Runs
- 12.5%Strike rate
- 12 (37.5%)Placed
- −15.80£1 level staken=32 at SP
- 0.99Fair A/E n=32 · 0.86 incl. margin
- 150Highest OR
- 35dBetween runs (median)longest 610 d
A/E compares actual wins with what starting prices implied. "Fair" strips the bookmaker margin from the expectation, so favourites and longshots are judged on the same footing — figures near 1.00 mean the market priced this horse about right.
KTB Speed and Rating
Best recent Speed 90
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 →
| Going | Runs | Best | Median | Since 4 Nov 2025 |
|---|---|---|---|---|
| Good | 9 | 123A | 85 | — |
| Soft | 5 | 136A | 63 | — |
| Good to Soft | 4 | 124A | 102 | — |
| Heavy | 3 | 96B | 91 | — |
| Distance | Runs | Best | Median | Since 4 Nov 2025 |
|---|---|---|---|---|
| 2m5f – 3m | 11 | 108C | 83 | — |
| Over 3m | 5 | 103B | 85 | — |
| 2m1f – 2m4f | 5 | 136A | 123 | — |
Of 28 runs looked at, 7 have no figure: did not complete (4) · obstacles omitted — the race ran a shortened course (2) · not enough races on the card to set the day (under 4) (1).
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 21 figures from 28 runs · as at 3 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
Progeny in our archive have won 9.3% of 952 runs since Jan 2008 (106 horses).
Weakest on good going: 4.9% from 143.
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Good to Firm | 13 | 1 | 7.7% | −1.6 | — |
| Good | 143 | 7 | 4.9% | −4.4 | 0 from 10 |
| Good to Soft | 99 | 14 | 14.1% | +4.8 | 1 from 5 |
| Soft | 439 | 38 | 8.7% | −0.6 | 2 from 12 |
| Heavy | 252 | 28 | 11.1% | +1.8 | 1 from 5 |
| Standard (AW) | 4 | 0 | 0% | −9.3 | — |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| 1m – 1m1f | 1 | 0 | 0% | −9.3 | — |
| 1m2f – 1m4f | 24 | 1 | 4.2% | −5.1 | — |
| 1m5f – 2m | 130 | 15 | 11.5% | +2.2 | 0 from 3 |
| 2m1f – 2m4f | 453 | 43 | 9.5% | +0.2 | 2 from 7 |
| 2m5f – 3m | 260 | 24 | 9.2% | −0.1 | 1 from 13 |
| Over 3m | 84 | 6 | 7.1% | −2.2 | 1 from 9 |
Flat and jumps together (all codes) · since Jan 2008 · as at 4 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
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
| Going | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Soft | 12 | 2 | 17% | −7.30 |
| Good | 10 | 0 | 0% | −10.00 |
| Good to Soft | 5 | 1 | 20% | +0.50 |
| Heavy | 5 | 1 | 20% | +1.00 |
| Class | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Class 1 | 14 | 2 | 14% | −2.50 |
| Class 2 | 11 | 0 | 0% | −11.00 |
| Class 4 | 3 | 1 | 33% | −0.80 |
| Class 3 | 3 | 1 | 33% | −0.50 |
| Course | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Cheltenham | 13 | 2 | 15% | −1.50 |
| Chepstow | 4 | 0 | 0% | −4.00 |
| Sandown | 3 | 0 | 0% | −3.00 |
| Bangor-on-Dee | 2 | 0 | 0% | −2.00 |
| Warwick | 2 | 1 | 50% | +0.20 |
| Aintree | 2 | 0 | 0% | −2.00 |
| Ludlow | 1 | 0 | 0% | −1.00 |
| Haydock | 1 | 0 | 0% | −1.00 |
| Uttoxeter | 1 | 0 | 0% | −1.00 |
| Kempton | 1 | 0 | 0% | −1.00 |
| Exeter | 1 | 1 | 100% | +1.50 |
| Auteuil (FR) | 1 | 0 | 0% | −1.00 |
| Distance | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| 2m5f – 3m | 13 | 1 | 8% | −10.50 |
| Over 3m | 9 | 1 | 11% | −3.00 |
| 2m1f – 2m4f | 7 | 2 | 29% | +0.70 |
| 1m5f – 2m | 3 | 0 | 0% | −3.00 |
| Jockey | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Lizzie Kelly | 18 | 4 | 22% | −1.80 |
| Sam Twiston-Davies | 4 | 0 | 0% | −4.00 |
| Charlie Deutsch | 3 | 0 | 0% | −3.00 |
| Richard Johnson | 2 | 0 | 0% | −2.00 |
| Shane Quinlan | 1 | 0 | 0% | −1.00 |
| Miss M O'Sullivan | 1 | 0 | 0% | −1.00 |
| Miss Lucy Turner | 1 | 0 | 0% | −1.00 |
| Tom O'Brien | 1 | 0 | 0% | −1.00 |
| Aidan Coleman | 1 | 0 | 0% | −1.00 |
| Season | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| 2023 | 5 | 0 | 0% | −5.00 |
| 2022 | 1 | 0 | 0% | −1.00 |
| 2021 | 4 | 0 | 0% | −4.00 |
| 2020 | 2 | 0 | 0% | −2.00 |
| 2019 | 1 | 0 | 0% | −1.00 |
| 2018 | 7 | 2 | 29% | +1.50 |
| 2017 | 7 | 2 | 29% | +0.70 |
| 2016 | 4 | 0 | 0% | −4.00 |
| 2015 | 1 | 0 | 0% | −1.00 |
| Type | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Chase | 23 | 2 | 9% | −14.50 |
| Hurdle | 9 | 2 | 22% | −1.30 |
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
Quick answers
- How many races has Coo Star Sivola won?
- Coo Star Sivola (FR) won 4 of 32 archived starts between 2015 and 2023, a strike rate of 12.5%. Placed 12 times in total (37.5% of starts).
- Who trained Coo Star Sivola?
- Coo Star Sivola (FR) was trained by Venetia Williams on the most recent run on record, at Bangor-on-Dee on 20 May 2023.
- Who is Coo Star Sivola's sire?
- Coo Star Sivola (FR) is by Assessor (IRE) out of Santorine (FR), whose sire is Della Francesca.
- What going does Coo Star Sivola prefer?
- Coo Star Sivola (FR) has the best record on good to soft going: 1 win from 5 starts (20%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
- What is Coo Star Sivola's official rating?
- The most recent official rating on record is 112, from the run on 20 May 2023. The highest on record is 150.
- What is Coo Star Sivola's sire's record?
- Assessor (IRE)'s progeny in our archive have won 9.3% of 952 runs since Jan 2008 (106 horses), Flat and jumps together. Weakest on good going: 4.9% from 143.