Mariner Boy (GB)
Mariner Boy is a gelding by Kingman out of the Not A Single Doubt mare Selenia. He ran three times on the all-weather at Dundalk between Nov 2024 and Dec 2024 without winning or placing. His best effort came when fourth of 11 at Dundalk in Dec 2024. He finished seventh of 11 in the Irishinjuredjockeys.com Race at the same track later that month.
- 0–3Wins / Runs
- 0%Strike rate
- 0 (0%)Placed
- −3.00£1 level staken=3 at SP
- 20dAvg between runs
KTB Speed and Rating
Best recent Speed 91
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 28 Oct 2025 |
|---|---|---|---|---|
| Standard (AW) | 3 | 91A | 76 | — |
| Distance | Runs | Best | Median | Since 28 Oct 2025 |
|---|---|---|---|---|
| 1m – 1m1f | 3 | 91A | 76 | — |
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 3 figures from 3 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 from 3 analysed runs since Nov 2024
- Prominent 2 (67%) · 0 wins
- Held up 1 (33%) · 0 wins
Pedigree intelligence
Progeny in our archive have won 14.5% of 7,488 runs since Jan 2008 (775 horses).
Weakest on soft going: 11% from 961. Weakest over 2m1f – 2m4f (all codes): 9.1% from 121.
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Firm | 13 | 1 | 7.7% | −6.8 | — |
| Good to Firm | 1,201 | 201 | 16.7% | +2.2 | — |
| Good | 1,684 | 240 | 14.3% | −0.2 | — |
| Good to Soft | 911 | 123 | 13.5% | −1 | — |
| Soft | 961 | 106 | 11% | −3.5 | — |
| Heavy | 294 | 36 | 12.2% | −2.3 | — |
| Standard (AW) | 2,424 | 382 | 15.8% | +1.3 | 0 from 3 |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 275 | 39 | 14.2% | −0.3 | — |
| 6f – 7f | 2,630 | 386 | 14.7% | +0.2 | — |
| 1m – 1m1f | 2,575 | 397 | 15.4% | +0.9 | 0 from 3 |
| 1m2f – 1m4f | 1,490 | 218 | 14.6% | +0.1 | — |
| 1m5f – 2m | 362 | 36 | 9.9% | −4.6 | — |
| 2m1f – 2m4f | 121 | 11 | 9.1% | −5.4 | — |
| 2m5f – 3m | 33 | 2 | 6.1% | −8.4 | — |
| Over 3m | 2 | 0 | 0% | −14.5 | — |
Flat and jumps together (all codes) · since Jan 2008 · as at 28 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
3 siblings in the archive, 0 winners.
| Produce | Runs | Wins | Win trips | Best grade |
|---|---|---|---|---|
| Saanen (IRE) | 10 | 0 | — | — |
| Soho House (GB) | 1 | 0 | — | — |
| Sociando (FR) | 8 | 0 | — | — |
Record by conditions
| Jockey | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Julian Pietropaolo | 1 | 0 | 0% | −1.00 |
| Declan McDonogh | 1 | 0 | 0% | −1.00 |
| Wayne Hassett | 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 | Spd | KTB | Jockey | SP |
|---|---|---|---|---|---|---|---|---|---|
| 2024 · 3 runs | |||||||||
| 18 Dec 24+12d | Dundalk (AW) | Irishinjuredjockeys.com Race Sat close to the pace early - pressed for effort with 2f left and slipped back to 7th - unable to threaten from there | 7/11 | 2¼ | 8-12 | 91A | 68A | Julian Pietropaolo | 33/1 |
| 06 Dec 24+28d | Dundalk (AW) | Irishinjuredjockeys.com Maiden Sat close to the pace early - third at halfway then pushed along with no headway a furlong out - dropped to fourth and held inside final 150 yards | 4/11 | 3 | 9-7 | 76A | 78A | Declan McDonogh | 11/2 |
| 08 Nov 24 | Dundalk (AW) | Irish Stallion Farms EBF (C & G) Maiden Slow into stride and settled near the back - pushed along and edged closer on the inside 2f out - stayed on at one speed through the final furlong to finish seventh | 7/12 | 1¼ | 9-0 | 69A | 61A | Wayne Hassett | 11/1 |
Quick answers
- How many races has Mariner Boy won?
- Mariner Boy (GB) has yet to win, from 3 archived starts in 2024.
- Who trained Mariner Boy?
- Mariner Boy (GB) was trained by Joseph Patrick O'Brien on the most recent run on record, at Dundalk (AW) on 18 December 2024.
- Who is Mariner Boy's sire?
- Mariner Boy (GB) is by Kingman (GB) out of Selenia (AUS), whose sire is Not A Single Doubt.
- What is Mariner Boy's sire's record?
- Kingman (GB)'s progeny in our archive have won 14.5% of 7,488 runs since Jan 2008 (775 horses), Flat and jumps together. Weakest on soft going: 11% from 961. Weakest over 2m1f – 2m4f (all codes): 9.1% from 121.
- Who are Mariner Boy's siblings?
- Out of Selenia (AUS), Mariner Boy (GB) has 3 other produce in our archive, 0 of them winners. As at Oct 2026.