Nagging Doubt (GB)
Nagging Doubt (GB) is yet to win from 6 starts. Last raced off a career-high mark of 45.
- 0–6Wins / Runs
- 0%Strike rate
- 0 (0%)Placed
- −6.00£1 level staken=6 at SP
- 0.00Fair A/E n=6 · 0.00 incl. margin
- 45Highest OR
- 23dAvg 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 39
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 |
|---|---|---|---|---|
| Good to Firm | 4 | 37C | 32 | — |
| Good | 1 | — | — | — |
| Standard (AW) | 1 | — | — | — |
| Distance | Runs | Best | Median | Since 21 Oct 2025 |
|---|---|---|---|---|
| Under 6f | 5 | 67C | 34 | — |
| 6f – 7f | 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 8.2% of 1,723 runs since Jan 2008 (100 horses).
Strongest on good going: 11.4% from 368. Strongest over 1m5f – 2m (all codes): 12.4% from 145.
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Firm | 32 | 1 | 3.1% | −5.1 | — |
| Good to Firm | 282 | 18 | 6.4% | −1.8 | 0 from 4 |
| Good | 368 | 42 | 11.4% | +3.2 | 0 from 1 |
| Good to Soft | 209 | 16 | 7.7% | −0.5 | — |
| Soft | 202 | 22 | 10.9% | +2.7 | — |
| Heavy | 53 | 10 | 18.9% | +10.7 | — |
| Standard (AW) | 577 | 33 | 5.7% | −2.5 | 0 from 1 |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 395 | 42 | 10.6% | +2.4 | 0 from 5 |
| 6f – 7f | 746 | 51 | 6.8% | −1.4 | 0 from 1 |
| 1m – 1m1f | 256 | 17 | 6.6% | −1.6 | — |
| 1m2f – 1m4f | 143 | 11 | 7.7% | −0.5 | — |
| 1m5f – 2m | 145 | 18 | 12.4% | +4.2 | — |
| 2m1f – 2m4f | 33 | 2 | 6.1% | −2.1 | — |
| 2m5f – 3m | 5 | 1 | 20% | +11.8 | — |
Flat and jumps together (all codes) · since Jan 2008 · as at 21 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
7 siblings in the archive, 4 winners — best of them Bettys Hope (GB) (3 wins).
The wins came over 5f–1m; the highest grade won is Class 2 (Bettys Hope (GB)).
| Produce | Runs | Wins | Win trips | Best grade |
|---|---|---|---|---|
| Bettys Hope (GB) | 15 | 3 | 5f–6f | Class 2 |
| Reflation (GB) | 45 | 3 | 6f | Class 6 |
| Compton Poppy (GB) | 21 | 2 | 5f | Class 5 |
| Bon Port (GB) | 9 | 2 | 7f–1m | Class 5 |
| Monte Forte (GB) | 7 | 0 | — | — |
| Proventi (GB) | 14 | 0 | — | — |
| Madam Pomfrey (GB) | 2 | 0 | — | — |
Record by conditions
| Going | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Good to Firm | 4 | 0 | 0% | −4.00 |
| Good | 1 | 0 | 0% | −1.00 |
| Standard (AW) | 1 | 0 | 0% | −1.00 |
| Class | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Class 5 | 3 | 0 | 0% | −3.00 |
| Class 6 | 3 | 0 | 0% | −3.00 |
| Course | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Bath | 1 | 0 | 0% | −1.00 |
| Ffos Las | 1 | 0 | 0% | −1.00 |
| Wolverhampton (AW) | 1 | 0 | 0% | −1.00 |
| Windsor | 1 | 0 | 0% | −1.00 |
| Chepstow | 1 | 0 | 0% | −1.00 |
| Lingfield | 1 | 0 | 0% | −1.00 |
| Distance | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Under 6f | 5 | 0 | 0% | −5.00 |
| 6f – 7f | 1 | 0 | 0% | −1.00 |
| Jockey | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Joey Haynes | 2 | 0 | 0% | −2.00 |
| George Downing | 2 | 0 | 0% | −2.00 |
| Aaron Jones | 1 | 0 | 0% | −1.00 |
| Sophie Ralston | 1 | 0 | 0% | −1.00 |
| Headgear | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| None | 5 | 0 | 0% | −5.00 |
| Cheekpieces | 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
| Date | Course | Race | Pos | Btn | Wgt | OR | Spd | KTB | Jockey | SP |
|---|---|---|---|---|---|---|---|---|---|---|
| 01 Oct 18+18d | Bath | Iesis Group Nursery | 13/13 | 4½ | 7-11 | 45 | 34C | 17C | Aaron Jones | 100/1 |
| 13 Sep 18+27d | Ffos Las | Mintbet Bet 10 Get 10 Welcome Bonus Nursery | 14/14 | ½ | 8-8 | 45 | 67C | 8A | Joey Haynes | 80/1 |
| 17 Aug 18+18d | Wolverhampton (AW) | EBC Group: Digital And Print Solutions Nursery | 10/10 | 3¼ | 7-13 | 45 | 39A | 8A | Sophie Ralston | 22/1 |
| 30 Jul 18+11d | Windsor | MPG Contracts Maiden Stakes | 11/11 | 5 | 9-0 | — | 30C | 13C | Joey Haynes | 100/1 |
| 19 Jul 18+40d | Chepstow | Open Championship Golf In Play At starsports.bet Novice Median Auction Stakes | 6/6 | 5 | 8-11 | — | 37C | 20C | George Downing | 100/1 |
| 09 Jun 18 | Lingfield | Premier Pensions Fillies' Novice Median Auction Stakes (Plus 10) | 12/12 | 1½ | 8-12 | — | 19C | 18C | George Downing | 66/1 |
Quick answers
- How many races has Nagging Doubt (GB) won?
- Nagging Doubt (GB) has yet to win, from 6 archived starts in 2018.
- Who trained Nagging Doubt (GB)?
- Nagging Doubt (GB) was trained by Tony Carroll on the most recent run on record, at Bath on 1 October 2018.
- Who is Nagging Doubt (GB)'s sire?
- Nagging Doubt (GB) is by Stimulation (IRE) out of Miss Poppy (GB), whose sire is Averti.
- What is Nagging Doubt (GB)'s official rating?
- The most recent official rating on record is 45, from the run on 1 October 2018. That is also the highest on record.
- What is Nagging Doubt (GB)'s sire's record?
- Stimulation (IRE)'s progeny in our archive have won 8.2% of 1,723 runs since Jan 2008 (100 horses), Flat and jumps together. Strongest on good going: 11.4% from 368. Strongest over 1m5f – 2m (all codes): 12.4% from 145.
- Who are Nagging Doubt (GB)'s siblings?
- Out of Miss Poppy (GB), Nagging Doubt (GB) has 7 other produce in our archive, 4 of them winners. Most wins: Bettys Hope (GB) (3). Highest grade won: Class 2 (Bettys Hope (GB)). The wins came over 5f–1m. As at Oct 2026.