Sir Arthur's Boy (GB)
Sir Arthur's Boy is a gelding by Night Of Thunder out of the Alhaarth mare Shallika. He ran six times between Oct 2022 and Aug 2023 without winning or placing. All six starts came in 6f to 1m1f races, five of them on standard AW surfaces. His last run, at Southwell (AW) in Aug 2023, saw him finish 10 of 10 in a Class 6 race off an official rating of 50, which was 8lb below his highest ever mark.
- 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
- 58Highest OR
- 21dBetween runs (median)longest 160 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 66
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 5 Nov 2025 |
|---|---|---|---|---|
| Standard (AW) | 5 | 66A | 10 | — |
| Good to Firm | 1 | — | — | — |
| Distance | Runs | Best | Median | Since 5 Nov 2025 |
|---|---|---|---|---|
| 6f – 7f | 4 | 66A | 16 | — |
| Under 6f | 1 | — | — | — |
| 1m – 1m1f | 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 16.3% of 5,107 runs since Apr 2019 (563 horses).
Weakest over 1m5f – 2m (all codes): 6.9% from 160.
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Firm | 4 | 2 | 50% | +33.7 | — |
| Good to Firm | 831 | 154 | 18.5% | +2.2 | 0 from 1 |
| Good | 1,220 | 199 | 16.3% | 0 | — |
| Good to Soft | 585 | 95 | 16.2% | −0.1 | — |
| Soft | 716 | 120 | 16.8% | +0.5 | — |
| Heavy | 217 | 36 | 16.6% | +0.3 | — |
| Standard (AW) | 1,534 | 227 | 14.8% | −1.5 | 0 from 5 |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 383 | 60 | 15.7% | −0.6 | 0 from 1 |
| 6f – 7f | 2,129 | 377 | 17.7% | +1.4 | 0 from 4 |
| 1m – 1m1f | 1,373 | 207 | 15.1% | −1.2 | 0 from 1 |
| 1m2f – 1m4f | 1,004 | 172 | 17.1% | +0.8 | — |
| 1m5f – 2m | 160 | 11 | 6.9% | −9.4 | — |
| 2m1f – 2m4f | 47 | 5 | 10.6% | −5.7 | — |
| 2m5f – 3m | 9 | 1 | 11.1% | −5.2 | — |
| Over 3m | 2 | 0 | 0% | −16.3 | — |
Flat and jumps together (all codes) · since Apr 2019 · as at 5 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
4 siblings in the archive, 2 winners — best of them Kallisha (GB) (2 wins).
The wins came over 1m2f–1m4f; the highest grade won is Class 4 (Kallisha (GB)).
| Produce | Runs | Wins | Win trips | Best grade |
|---|---|---|---|---|
| Kallisha (GB) | 12 | 2 | 1m2f–1m4f | Class 4 |
| Ultimate Destiny (GB) | 9 | 2 | 1m2f | Class 5 |
| Inky Blinder (GB) | 4 | 0 | — | — |
| Ishallak (GB) | 9 | 0 | — | — |
Record by conditions
| Going | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Standard (AW) | 5 | 0 | 0% | −5.00 |
| Good to Firm | 1 | 0 | 0% | −1.00 |
| Class | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Class 6 | 3 | 0 | 0% | −3.00 |
| Class 5 | 3 | 0 | 0% | −3.00 |
| Course | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Newcastle (AW) | 3 | 0 | 0% | −3.00 |
| Southwell (AW) | 2 | 0 | 0% | −2.00 |
| Beverley | 1 | 0 | 0% | −1.00 |
| Distance | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| 6f – 7f | 4 | 0 | 0% | −4.00 |
| Under 6f | 1 | 0 | 0% | −1.00 |
| 1m – 1m1f | 1 | 0 | 0% | −1.00 |
| Jockey | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Paul Mulrennan | 3 | 0 | 0% | −3.00 |
| Shane Gray | 1 | 0 | 0% | −1.00 |
| William Pyle | 1 | 0 | 0% | −1.00 |
| Paul Hanagan | 1 | 0 | 0% | −1.00 |
| Headgear | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| None | 4 | 0 | 0% | −4.00 |
| Blinkers | 1 | 0 | 0% | −1.00 |
| Cheekpieces | 1 | 0 | 0% | −1.00 |
| Season | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| 2023 | 3 | 0 | 0% | −3.00 |
| 2022 | 3 | 0 | 0% | −3.00 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023 · 3 runs | ||||||||||
| 20 Aug 23+81d | Southwell (AW) | Newark Advertiser Classified Stakes (Div 1) | 10/10 | 25 | 9-2 | 50 | -10C | 20C | Shane Gray | 100/1 |
| 31 May 23+20d | Beverley | Big Racing Weekend On 10 And 11 June Apprentice Handicap | 11/11 | 3¼ | 8-13 | 54 | 19C | 13C | William Pyle | 80/1 |
| 11 May 23+160d | Southwell (AW) | More Extra Place Races Everyday At unibet.co.uk Handicap | 12/12 | 22 | 9-7 | 58 | -4C | 18C | Paul Hanagan | 40/1 |
| 2022 · 3 runs | ||||||||||
| 02 Dec 22+21d | Newcastle (AW) | talkSPORT Powered By Fans EBF Restricted Novice Stakes (GBB Race) (Div 2) | 8/9 | ½ | 9-7 | — | 66A | 45A | Paul Mulrennan | 200/1 |
| 11 Nov 22+18d | Newcastle (AW) | talkSPORT Download The App EBF Novice Stakes (GBB Race) (Div 2) | 11/11 | 7½ | 9-7 | — | 36C | 38C | Paul Mulrennan | 250/1 |
| 24 Oct 22 | Newcastle (AW) | It's Time To Turn To talkSPORT Novice Stakes (GBB Race) | 6/6 | 22 | 9-4 | — | 10C | 35C | Paul Mulrennan | 50/1 |
Quick answers
- How many races has Sir Arthur's Boy won?
- Sir Arthur's Boy (GB) has yet to win, from 6 archived starts between 2022 and 2023.
- Who trained Sir Arthur's Boy?
- Sir Arthur's Boy (GB) was trained by Ann Duffield on the most recent run on record, at Southwell (AW) on 20 August 2023.
- Who is Sir Arthur's Boy's sire?
- Sir Arthur's Boy (GB) is by Night Of Thunder (IRE) out of Shallika (IRE), whose sire is Alhaarth.
- What is Sir Arthur's Boy's official rating?
- The most recent official rating on record is 50, from the run on 20 August 2023. The highest on record is 58.
- What is Sir Arthur's Boy's sire's record?
- Night Of Thunder (IRE)'s progeny in our archive have won 16.3% of 5,107 runs since Apr 2019 (563 horses), Flat and jumps together. Weakest over 1m5f – 2m (all codes): 6.9% from 160.
- Who are Sir Arthur's Boy's siblings?
- Out of Shallika (IRE), Sir Arthur's Boy (GB) has 4 other produce in our archive, 2 of them winners. Most wins: Kallisha (GB) (2). Highest grade won: Class 4 (Kallisha (GB)). The wins came over 1m2f–1m4f. As at Nov 2026.