Understudy (GB)
Understudy is a lightly raced filly with one place from two starts on turf. She finished second of seven at Clairefontaine in Jul 2026 and seventh of eight in a Class 1 at the same course in Aug 2026 when beaten favourite. By Sea The Stars, whose progeny in the archive have won 1541 of 9818 runs since Jan 2008. Her dam has produced three winners from four runners that have run. She last ran off an official rating of 100.
- 0–2Wins / Runs
- 0%Strike rate
- 1 (50%)Placed
- −2.00£1 level staken=2 at SP
- 100Highest OR
- 21dAvg between runs
KTB Speed and Rating
No KTB Speed figures for this horse. The engine scores GB and Irish racing from Oct 2016; runs elsewhere, or earlier, have no figure.
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 0 figures from 0 runs · 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 15.7% of 9,926 runs since Jan 2008 (1,107 horses).
Strongest on good to firm going: 18.9% from 1,503. Weakest on heavy going: 9.3% from 452. Weakest over 2m5f – 3m (all codes): 11.5% from 139.
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Firm | 18 | 3 | 16.7% | +1 | — |
| Good to Firm | 1,503 | 284 | 18.9% | +3.2 | — |
| Good | 2,644 | 421 | 15.9% | +0.2 | — |
| Good to Soft | 1,235 | 205 | 16.6% | +0.9 | 0 from 2 |
| Soft | 1,524 | 186 | 12.2% | −3.5 | — |
| Heavy | 452 | 42 | 9.3% | −6.4 | — |
| Standard (AW) | 2,549 | 420 | 16.5% | +0.8 | — |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 27 | 4 | 14.8% | −0.9 | — |
| 6f – 7f | 772 | 113 | 14.6% | −1.1 | — |
| 1m – 1m1f | 2,088 | 333 | 15.9% | +0.2 | — |
| 1m2f – 1m4f | 4,408 | 757 | 17.2% | +1.5 | 0 from 1 |
| 1m5f – 2m | 1,888 | 262 | 13.9% | −1.8 | 0 from 1 |
| 2m1f – 2m4f | 583 | 73 | 12.5% | −3.2 | — |
| 2m5f – 3m | 139 | 16 | 11.5% | −4.2 | — |
| Over 3m | 21 | 3 | 14.3% | −1.4 | — |
Flat and jumps together (all codes) · since Jan 2008 · as at 18 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
4 siblings in the archive, 3 winners — best of them Auriferous (IRE) (1 win).
The wins came over 1m2f–1m4f; the highest grade won is Class 4 (American Flag (IRE)).
| Produce | Runs | Wins | Win trips | Best grade |
|---|---|---|---|---|
| Auriferous (IRE) | 20 | 1 | 1m4f | Class 5 |
| Understudy (GB) | 11 | 1 | 1m4f | Class 5 |
| American Flag (IRE) | 6 | 1 | 1m2f | Class 4 |
| Commandeer (IRE) | 2 | 0 | — | — |
Too few runs for meaningful splits. The full record is below.
Form
| Date | Course | Race | Pos | Btn | Wgt | OR | Jockey | SP |
|---|---|---|---|---|---|---|---|---|
| 01 Aug 26+21d | Clairefontaine (FR) | Caen Tattoo Festival - Prix Luth Enchantee | 7/8 | 4½ | 8-13 | 100 | Clement Lecoeuvre | 15/8F |
| 11 Jul 26 | Clairefontaine (FR) | Prix Perrault Stakes | 2/7 | nk | 8-8 | 100 | M Velon | 11/8F |
Quick answers
- How many races has Understudy (GB) won?
- Understudy (GB) has yet to win, from 2 archived starts in 2026. Placed 1 time in total (50% of starts).
- Who trains Understudy (GB)?
- Understudy (GB) is trained by F-H Graffard, who saddled the horse on its most recent run on 1 August 2026.
- Who is Understudy (GB)'s sire?
- Understudy (GB) is by Sea The Stars (IRE) out of Sequester (GB), whose sire is Selkirk.
- What is Understudy (GB)'s official rating?
- The most recent official rating on record is 100, from the run on 1 August 2026. That is also the highest on record.
- What is Understudy (GB)'s sire's record?
- Sea The Stars (IRE)'s progeny in our archive have won 15.7% of 9,926 runs since Jan 2008 (1,107 horses), Flat and jumps together. Strongest on good to firm going: 18.9% from 1,503. Weakest on heavy going: 9.3% from 452. Weakest over 2m5f – 3m (all codes): 11.5% from 139.
- Who are Understudy (GB)'s siblings?
- Out of Sequester (GB), Understudy (GB) has 4 other produce in our archive, 3 of them winners. Most wins: Auriferous (IRE) (1). Highest grade won: Class 4 (American Flag (IRE)). The wins came over 1m2f–1m4f. As at Oct 2026.