Assertainty (GB)
Lightly raced, with 2 archived starts, both in Nov 2017, the last of them as a 2yo gelding. Finished 8 of 9 at Newcastle (AW) last time. By Assertive (GB), whose progeny in our archive have won 7.2% of 1,569 runs since Jan 2008.
- 0–2Wins / Runs
- 0%Strike rate
- 0 (0%)Placed
- −2.00£1 level staken=2 at SP
- 12dAvg between runs
KTB Speed and Rating
Best recent Speed 51
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 21 Oct 2025 |
|---|---|---|---|---|
| Standard (AW) | 1 | — | — | — |
| Soft | 1 | — | — | — |
| Distance | Runs | Best | Median | Since 21 Oct 2025 |
|---|---|---|---|---|
| 6f – 7f | 2 | 51A | 44 | — |
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 2 figures from 2 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 | — |
| Good | 329 | 21 | 6.4% | −0.8 | — |
| Good to Soft | 162 | 10 | 6.2% | −1 | — |
| Soft | 159 | 18 | 11.3% | +4.1 | 0 from 1 |
| Heavy | 38 | 7 | 18.4% | +11.2 | — |
| Standard (AW) | 574 | 36 | 6.3% | −0.9 | 0 from 1 |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 459 | 36 | 7.8% | +0.6 | — |
| 6f – 7f | 849 | 62 | 7.3% | +0.1 | 0 from 2 |
| 1m – 1m1f | 132 | 7 | 5.3% | −1.9 | — |
| 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 20 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
1 sibling in the archive, 0 winners.
| Produce | Runs | Wins | Win trips | Best grade |
|---|---|---|---|---|
| Layla's Dream (GB) | 8 | 0 | — | — |
Too few runs for meaningful splits. The full record is below.
Form
| Date | Course | Race | Pos | Btn | Wgt | Spd | KTB | Jockey | SP |
|---|---|---|---|---|---|---|---|---|---|
| 23 Nov 17+12d | Newcastle (AW) | 32Red.com EBF Novice Stakes (Plus 10) (Div 2) | 8/9 | 5 | 9-2 | 37C | 32C | Duran Fentiman | 40/1 |
| 11 Nov 17 | Doncaster | Betfred Mobile Cock O'The North EBF Maiden Stakes (Plus 10) (Div 1) | 10/11 | 2½ | 9-2 | 51A | 35A | Rachel Richardson | 66/1 |
Quick answers
- How many races has Assertainty (GB) won?
- Assertainty (GB) has yet to win, from 2 archived starts in 2017.
- Who trained Assertainty (GB)?
- Assertainty (GB) was trained by Tim Easterby on the most recent run on record, at Newcastle (AW) on 23 November 2017.
- Who is Assertainty (GB)'s sire?
- Assertainty (GB) is by Assertive (GB) out of Layla's Oasis (GB), whose sire is Oasis Dream.
- What is Assertainty (GB)'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 Assertainty (GB)'s siblings?
- Out of Layla's Oasis (GB), Assertainty (GB) has 1 other produce in our archive, 0 of them winners. As at Oct 2026.