A Definite Diamond (GB)
A Definite Diamond (GB) is yet to win from 12 starts. Last raced off a career-high mark of 45.
- 0–12Wins / Runs
- 0%Strike rate
- 0 (0%)Placed
- −12.00£1 level staken=12 at SP
- 0.00Fair A/E n=12 · 0.00 incl. margin
- 45Highest OR
- 71dAvg between runs
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 —
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 27 Oct 2025 |
|---|---|---|---|---|
| Good | 2 | 33C | 33 | — |
| Good to Firm | 2 | 64C | 37.5 | — |
| Good to Soft | 1 | — | — | — |
| Standard (AW) | 1 | — | — | — |
| Distance | Runs | Best | Median | Since 27 Oct 2025 |
|---|---|---|---|---|
| 1m – 1m1f | 3 | 57C | 33 | — |
| 6f – 7f | 2 | 81C | 72.5 | — |
| Under 6f | 1 | — | — | — |
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 6 figures from 6 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 7.2% of 1,569 runs since Jan 2008 (84 horses).
Strongest on soft going: 11.3% from 159.
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Firm | 30 | 1 | 3.3% | −3.9 | — |
| Good to Firm | 277 | 20 | 7.2% | 0 | 0 from 4 |
| Good | 329 | 21 | 6.4% | −0.8 | 0 from 3 |
| Good to Soft | 162 | 10 | 6.2% | −1 | 0 from 1 |
| Soft | 159 | 18 | 11.3% | +4.1 | — |
| Heavy | 38 | 7 | 18.4% | +11.2 | 0 from 1 |
| Standard (AW) | 574 | 36 | 6.3% | −0.9 | 0 from 3 |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 459 | 36 | 7.8% | +0.6 | 0 from 2 |
| 6f – 7f | 849 | 62 | 7.3% | +0.1 | 0 from 5 |
| 1m – 1m1f | 132 | 7 | 5.3% | −1.9 | 0 from 5 |
| 1m2f – 1m4f | 90 | 6 | 6.7% | −0.5 | — |
| 1m5f – 2m | 32 | 2 | 6.3% | −0.9 | — |
| 2m1f – 2m4f | 6 | 0 | 0% | −7.2 | — |
| 2m5f – 3m | 1 | 0 | 0% | −7.2 | — |
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
3 siblings in the archive, 1 winner — best of them April Ciel (GB) (5 wins).
The wins came over 1m2f–1m3½f; the highest grade won is Class 5 (April Ciel (GB)).
| Produce | Runs | Wins | Win trips | Best grade |
|---|---|---|---|---|
| April Ciel (GB) | 40 | 5 | 1m2f–1m3½f | Class 5 |
| Defnikov (GB) | 5 | 0 | — | — |
| Definite Honey (GB) | 5 | 0 | — | — |
Record by conditions
| Going | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Good to Firm | 4 | 0 | 0% | −4.00 |
| Good | 3 | 0 | 0% | −3.00 |
| Standard (AW) | 3 | 0 | 0% | −3.00 |
| Good to Soft | 1 | 0 | 0% | −1.00 |
| Heavy | 1 | 0 | 0% | −1.00 |
| Class | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Class 6 | 6 | 0 | 0% | −6.00 |
| Class 5 | 6 | 0 | 0% | −6.00 |
| Course | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Chepstow | 4 | 0 | 0% | −4.00 |
| Salisbury | 3 | 0 | 0% | −3.00 |
| Kempton (AW) | 2 | 0 | 0% | −2.00 |
| Ffos Las | 1 | 0 | 0% | −1.00 |
| Bath | 1 | 0 | 0% | −1.00 |
| Wolverhampton (AW) | 1 | 0 | 0% | −1.00 |
| Distance | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| 1m – 1m1f | 5 | 0 | 0% | −5.00 |
| 6f – 7f | 5 | 0 | 0% | −5.00 |
| Under 6f | 2 | 0 | 0% | −2.00 |
| Jockey | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Aaron Jones | 3 | 0 | 0% | −3.00 |
| Franny Norton | 2 | 0 | 0% | −2.00 |
| Edward Greatrex | 1 | 0 | 0% | −1.00 |
| Trevor Whelan | 1 | 0 | 0% | −1.00 |
| Martin Dwyer | 1 | 0 | 0% | −1.00 |
| Royston Ffrench | 1 | 0 | 0% | −1.00 |
| Liam Keniry | 1 | 0 | 0% | −1.00 |
| Rob Hornby | 1 | 0 | 0% | −1.00 |
| Silvestre De Sousa | 1 | 0 | 0% | −1.00 |
| Headgear | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| None | 9 | 0 | 0% | −9.00 |
| Cheekpieces | 1 | 0 | 0% | −1.00 |
| Tongue tie + blinkers | 1 | 0 | 0% | −1.00 |
| Tongue tie | 1 | 0 | 0% | −1.00 |
| Season | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| 2017 | 6 | 0 | 0% | −6.00 |
| 2015 | 6 | 0 | 0% | −6.00 |
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
Quick answers
- How many races has A Definite Diamond won?
- A Definite Diamond (GB) has yet to win, from 12 archived starts between 2015 and 2017.
- Who trained A Definite Diamond?
- A Definite Diamond (GB) was trained by Grace Harris on the most recent run on record, at Salisbury on 17 August 2017.
- Who is A Definite Diamond's sire?
- A Definite Diamond (GB) is by Assertive (GB) out of By Definition (IRE), whose sire is Definite Article.
- What is A Definite Diamond's official rating?
- The most recent official rating on record is 45, from the run on 17 August 2017. That is also the highest on record.
- What is A Definite Diamond's sire's record?
- Assertive (GB)'s progeny in our archive have won 7.2% of 1,569 runs since Jan 2008 (84 horses), Flat and jumps together. Strongest on soft going: 11.3% from 159.
- Who are A Definite Diamond's siblings?
- Out of By Definition (IRE), A Definite Diamond (GB) has 3 other produce in our archive, 1 of them a winner. Most wins: April Ciel (GB) (5). Highest grade won: Class 5 (April Ciel (GB)). The wins came over 1m2f–1m3½f. As at Oct 2026.