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Horse profile
Understudy (GB, 2022)
- TrainerJohn & Thady Gosden
- OwnerB E Nielsen
- FamilyGolden Lamb
- Sex
- filly
- Foaled
- 2022
- Colour
- chestnut
See also: Understudy (GB) · Reg Hollinshead · 9 runs · 0 wins
- Highest OR
- 102
- Record (GB & IRE)
- 1 win from 6 runs (17%)
- Prize money (GB & IRE)
- £76,267 GB
- Official rating
- 101 (Flat)
- Last run (GB & IRE)
- 20 Nov 2025, Lingfield (AW) (2/13)
- Last win (GB & IRE)
- 31 May 2025, Southwell (AW)
Understudy has no declared runs or entries in Britain or Ireland at the moment.
Form
Race record
| Date | Course | Pos | SP | Btn | Jockey | Trainer | Race | Class | Type | Dist | Going | Wgt | OR | Winner / 2nd | Winner prize | Days | Future form |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 Nov 25 | Lingfield (AW) | 2/13 | 3/1 | 1¼ | Robert Havlin | John & Thady Gosden | BetMGM River Eden EBF Fillies' Stakes | Listed | Flat AW | 1m5f | Standard | 9-0 | 101 | Fairy Glen (FR) | £36,862 | 55 | 0/5 |
| 26 Sep 25 | Newmarket | 6/11 | 10/1 | 2½ | Oisin Murphy | John & Thady Gosden | Princess Royal Stakes (Sponsored By BOYLE Sports) (Fillies & Mares) | Group 3 | Flat Turf | 1m4f | Good to Firm | 8-12 | 102 | Silent Love (IRE) | £48,204 | 69 | 1/7 |
| 19 Jul 25 | Newmarket (July) | 5/10 | 4/1 | 11¼ | Oisin Murphy | John & Thady Gosden | Ric And Mary Hambro Aphrodite Fillies' Stakes | Listed | Flat Turf | 1m4f | Good to Soft | 8-9 | 102 | Spirited Style (GB) | £25,520 | 30 | 1/8 |
| 19 Jun 25 | Ascot | 2/11 | 40/1 | 3¼ | Robert Havlin | John & Thady Gosden | Ribblesdale Stakes (Fillies) | Group 2 | Flat Turf | 1m4f | Good to Firm | 9-2 | - | Garden Of Eden (IRE) | £141,775 | 19 | 0/9 |
| 31 May 25 | Southwell (AW) | 1/10 | 5/4F | won 4¼ | Tyler Heard | John & Thady Gosden | Sky Sports Racing Sky 415 Fillies' Novice Stakes | Class 5 | Flat AW | 1m4f | Standard | 8-13 | - | Coedana (IRE) | £3,768 | 29 | 0/8 |
| 2 May 25 | Newmarket | 4/6 | 13/2 | 4¾ | Oisin Murphy | John & Thady Gosden | Darley EBF Maiden Fillies' Stakes | Class 2 | Flat Turf | 1m2f | Good | 9-1 | - | Zgharta (IRE) | £20,616 | - | 0/4 |
- 2/1320 Nov 25 · Lingfield (AW)3/1
BetMGM River Eden EBF Fillies' Stakes
Listed1m5fStandard
All fields
- Date
- 20 Nov 25
- Course
- Lingfield (AW)
- Pos
- 2/13
- SP
- 3/1
- Btn
- 1¼
- Jockey
- Robert Havlin
- Trainer
- John & Thady Gosden
- Race
- BetMGM River Eden EBF Fillies' Stakes
- Class
- Listed
- Type
- Flat AW
- Dist
- 1m5f
- Going
- Standard
- Wgt
- 9-0
- OR
- 101
- Winner / 2nd
- Fairy Glen (FR)
- Winner prize
- £36,862
- Days
- 55
- Future form
- 0/5
- 6/1126 Sep 25 · Newmarket10/1
Princess Royal Stakes (Sponsored By BOYLE Sports) (Fillies & Mares)
Group 31m4fGood to Firm
All fields
- Date
- 26 Sep 25
- Course
- Newmarket
- Pos
- 6/11
- SP
- 10/1
- Btn
- 2½
- Jockey
- Oisin Murphy
- Trainer
- John & Thady Gosden
- Race
- Princess Royal Stakes (Sponsored By BOYLE Sports) (Fillies & Mares)
- Class
- Group 3
- Type
- Flat Turf
- Dist
- 1m4f
- Going
- Good to Firm
- Wgt
- 8-12
- OR
- 102
- Winner / 2nd
- Silent Love (IRE)
- Winner prize
- £48,204
- Days
- 69
- Future form
- 1/7
- 5/1019 Jul 25 · Newmarket (July)4/1
Ric And Mary Hambro Aphrodite Fillies' Stakes
Listed1m4fGood to Soft
All fields
- Date
- 19 Jul 25
- Course
- Newmarket (July)
- Pos
- 5/10
- SP
- 4/1
- Btn
- 11¼
- Jockey
- Oisin Murphy
- Trainer
- John & Thady Gosden
- Race
- Ric And Mary Hambro Aphrodite Fillies' Stakes
- Class
- Listed
- Type
- Flat Turf
- Dist
- 1m4f
- Going
- Good to Soft
- Wgt
- 8-9
- OR
- 102
- Winner / 2nd
- Spirited Style (GB)
- Winner prize
- £25,520
- Days
- 30
- Future form
- 1/8
Ribblesdale Stakes (Fillies)
Group 21m4fGood to Firm
All fields
- Date
- 19 Jun 25
- Course
- Ascot
- Pos
- 2/11
- SP
- 40/1
- Btn
- 3¼
- Jockey
- Robert Havlin
- Trainer
- John & Thady Gosden
- Race
- Ribblesdale Stakes (Fillies)
- Class
- Group 2
- Type
- Flat Turf
- Dist
- 1m4f
- Going
- Good to Firm
- Wgt
- 9-2
- OR
- -
- Winner / 2nd
- Garden Of Eden (IRE)
- Winner prize
- £141,775
- Days
- 19
- Future form
- 0/9
- 1/1031 May 25 · Southwell (AW)5/4F
Sky Sports Racing Sky 415 Fillies' Novice Stakes
Class 51m4fStandard
All fields
- Date
- 31 May 25
- Course
- Southwell (AW)
- Pos
- 1/10
- SP
- 5/4F
- Btn
- won 4¼
- Jockey
- Tyler Heard
- Trainer
- John & Thady Gosden
- Race
- Sky Sports Racing Sky 415 Fillies' Novice Stakes
- Class
- Class 5
- Type
- Flat AW
- Dist
- 1m4f
- Going
- Standard
- Wgt
- 8-13
- OR
- -
- Winner / 2nd
- Coedana (IRE)
- Winner prize
- £3,768
- Days
- 29
- Future form
- 0/8
- 4/62 May 25 · Newmarket13/2
Darley EBF Maiden Fillies' Stakes
Class 21m2fGood
All fields
- Date
- 2 May 25
- Course
- Newmarket
- Pos
- 4/6
- SP
- 13/2
- Btn
- 4¾
- Jockey
- Oisin Murphy
- Trainer
- John & Thady Gosden
- Race
- Darley EBF Maiden Fillies' Stakes
- Class
- Class 2
- Type
- Flat Turf
- Dist
- 1m2f
- Going
- Good
- Wgt
- 9-1
- OR
- -
- Winner / 2nd
- Zgharta (IRE)
- Winner prize
- £20,616
- Days
- -
- Future form
- 0/4
Every British and Irish run since 1990, latest first. Btn is the overall distance beaten (lengths). Where the horse won, the runner-up and winning margin are shown.
Future form: next-time-out winners from this horse's races
| Date | Course | Race | This horse | Winner next time | Their pos | Won on | At | Race won |
|---|---|---|---|---|---|---|---|---|
| 26 Sep 25 | Newmarket | Princess Royal Stakes (Sponsored By BOYLE Sports) (Fillies & Mares) | 6/11 | Karmology (GB) | 2 | 10 Oct 25 | Newmarket | Newmarket Pony Academy Pride Stakes (Fillies & Mares) |
| 19 Jul 25 | Newmarket (July) | Ric And Mary Hambro Aphrodite Fillies' Stakes | 5/10 | Favorite Memory (GB) | 9 | 14 Aug 25 | Salisbury | British EBF Premier Fillies' Handicap |
- 6/1126 Sep 25 · Newmarket
Princess Royal Stakes (Sponsored By BOYLE Sports) (Fillies & Mares)
All fields
- Date
- 26 Sep 25
- Course
- Newmarket
- Race
- Princess Royal Stakes (Sponsored By BOYLE Sports) (Fillies & Mares)
- This horse
- 6/11
- Winner next time
- Karmology (GB)
- Their pos
- 2
- Won on
- 10 Oct 25
- At
- Newmarket
- Race won
- Newmarket Pony Academy Pride Stakes (Fillies & Mares)
- 5/1019 Jul 25 · Newmarket (July)
Ric And Mary Hambro Aphrodite Fillies' Stakes
All fields
- Date
- 19 Jul 25
- Course
- Newmarket (July)
- Race
- Ric And Mary Hambro Aphrodite Fillies' Stakes
- This horse
- 5/10
- Winner next time
- Favorite Memory (GB)
- Their pos
- 9
- Won on
- 14 Aug 25
- Race won
- British EBF Premier Fillies' Handicap
Other runners from this horse's races (latest 20 races with a next-time-out winner, up to 40 rows) that won on their next start in Britain or Ireland. FF on the race record = next-time-out winners / runners that have run again (this horse excluded).
Trainer changes
| Trainer | First run | Last run | First run for yard | OR first run | OR last run | Best OR | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| John & Thady Gosden | 2 May 25 | 20 Nov 25 | 4/6 | 102 | 101 | 102 | 6 | 1 | 2 | 0 | £76,267 | €0 |
John & Thady Gosden
- Trainer
- John & Thady Gosden
- First run
- 2 May 25
- Last run
- 20 Nov 25
- First run for yard
- 4/6
- OR first run
- 102
- OR last run
- 101
- Best OR
- 102
- Runs
- 6
- Wins
- 1
- 2nd
- 2
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £76,267
- Prize IRE (€)
- €0
Trained by one trainer throughout its British and Irish career.
Stats
Career summary by code (GB & IRE)
| Code | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) | Best OR | First run | Last run |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Flat | 6 | 1 | 2 | 0 | £76,267 | €0 | 102 | 2 May 25 | 20 Nov 25 |
Flat
- Code
- Flat
- Runs
- 6
- Wins
- 1
- 2nd
- 2
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £76,267
- Prize IRE (€)
- €0
- Best OR
- 102
- First run
- 2 May 25
- Last run
- 20 Nov 25
Placed = 1st in 2-4 runners, 1st-2nd in 5-7, 1st-3rd in 8+.
By race type
| Race type | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| Flat Turf | 4 | 0 | 1 | 0 | £58,524 | €0 | ||
| Flat AW | 2 | 1 | 1 | 0 | £17,743 | €0 |
Flat Turf
- Race type
- Flat Turf
- Runs
- 4
- Wins
- 0
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £58,524
- Prize IRE (€)
- €0
Flat AW
- Race type
- Flat AW
- Runs
- 2
- Wins
- 1
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £17,743
- Prize IRE (€)
- €0
By going
| Going | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| Good to Firm | 2 | 0 | 1 | 0 | £54,898 | €0 | ||
| Good | 1 | 0 | 0 | 0 | £2,416 | €0 | ||
| Good to Soft | 1 | 0 | 0 | 0 | £1,211 | €0 | ||
| Standard | 2 | 1 | 1 | 0 | £17,743 | €0 |
Good to Firm
- Going
- Good to Firm
- Runs
- 2
- Wins
- 0
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £54,898
- Prize IRE (€)
- €0
Good
- Going
- Good
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £2,416
- Prize IRE (€)
- €0
Good to Soft
- Going
- Good to Soft
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £1,211
- Prize IRE (€)
- €0
Standard
- Going
- Standard
- Runs
- 2
- Wins
- 1
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £17,743
- Prize IRE (€)
- €0
By distance
| Distance | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| 9f to 11f | 1 | 0 | 0 | 0 | £2,416 | €0 | ||
| 12f to 13f | 5 | 1 | 2 | 0 | £73,851 | €0 |
9f to 11f
- Distance
- 9f to 11f
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £2,416
- Prize IRE (€)
- €0
12f to 13f
- Distance
- 12f to 13f
- Runs
- 5
- Wins
- 1
- 2nd
- 2
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £73,851
- Prize IRE (€)
- €0
Flat bands: 5f-6f, 7f-1m, 9f-11f, 12f-13f, 14f+. NH bands: 2m-2m1f, 2m2f-2m5f, 2m6f-3m1f, 3m2f+.
By course
| Course | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| Newmarket | 2 | 0 | 0 | 0 | £3,564 | €0 | ||
| Southwell (AW) | 1 | 1 | 0 | 0 | £3,768 | €0 | ||
| Ascot | 1 | 0 | 1 | 0 | £53,750 | €0 | ||
| Lingfield (AW) | 1 | 0 | 1 | 0 | £13,975 | €0 | ||
| Newmarket (July) | 1 | 0 | 0 | 0 | £1,211 | €0 |
Newmarket
- Course
- Newmarket
- Runs
- 2
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £3,564
- Prize IRE (€)
- €0
Southwell (AW)
- Course
- Southwell (AW)
- Runs
- 1
- Wins
- 1
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £3,768
- Prize IRE (€)
- €0
Ascot
- Course
- Ascot
- Runs
- 1
- Wins
- 0
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £53,750
- Prize IRE (€)
- €0
Lingfield (AW)
- Course
- Lingfield (AW)
- Runs
- 1
- Wins
- 0
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £13,975
- Prize IRE (€)
- €0
Newmarket (July)
- Course
- Newmarket (July)
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £1,211
- Prize IRE (€)
- €0
By class
| Class | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| Group 2 | 1 | 0 | 1 | 0 | £53,750 | €0 | ||
| Group 3 | 1 | 0 | 0 | 0 | £1,148 | €0 | ||
| Listed | 2 | 0 | 1 | 0 | £15,186 | €0 | ||
| Class 2 | 1 | 0 | 0 | 0 | £2,416 | €0 | ||
| Class 5 | 1 | 1 | 0 | 0 | £3,768 | €0 |
Group 2
- Class
- Group 2
- Runs
- 1
- Wins
- 0
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £53,750
- Prize IRE (€)
- €0
Group 3
- Class
- Group 3
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £1,148
- Prize IRE (€)
- €0
Listed
- Class
- Listed
- Runs
- 2
- Wins
- 0
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £15,186
- Prize IRE (€)
- €0
Class 2
- Class
- Class 2
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £2,416
- Prize IRE (€)
- €0
Class 5
- Class
- Class 5
- Runs
- 1
- Wins
- 1
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £3,768
- Prize IRE (€)
- €0
Pattern (Group/Grade/Listed) shown ahead of class. Irish races carry no class, so they are grouped as handicap or non-handicap.
By field size
| Runners | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| 6 to 8 runners | 1 | 0 | 0 | 0 | £2,416 | €0 | ||
| 9 to 12 runners | 4 | 1 | 1 | 0 | £59,876 | €0 | ||
| 13 to 16 runners | 1 | 0 | 1 | 0 | £13,975 | €0 |
6 to 8 runners
- Runners
- 6 to 8 runners
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £2,416
- Prize IRE (€)
- €0
9 to 12 runners
- Runners
- 9 to 12 runners
- Runs
- 4
- Wins
- 1
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £59,876
- Prize IRE (€)
- €0
13 to 16 runners
- Runners
- 13 to 16 runners
- Runs
- 1
- Wins
- 0
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £13,975
- Prize IRE (€)
- €0
By month
| Month | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| May | 2 | 1 | 0 | 0 | £6,184 | €0 | ||
| June | 1 | 0 | 1 | 0 | £53,750 | €0 | ||
| July | 1 | 0 | 0 | 0 | £1,211 | €0 | ||
| September | 1 | 0 | 0 | 0 | £1,148 | €0 | ||
| November | 1 | 0 | 1 | 0 | £13,975 | €0 |
May
- Month
- May
- Runs
- 2
- Wins
- 1
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £6,184
- Prize IRE (€)
- €0
June
- Month
- June
- Runs
- 1
- Wins
- 0
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £53,750
- Prize IRE (€)
- €0
July
- Month
- July
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £1,211
- Prize IRE (€)
- €0
September
- Month
- September
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £1,148
- Prize IRE (€)
- €0
November
- Month
- November
- Runs
- 1
- Wins
- 0
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £13,975
- Prize IRE (€)
- €0
By jockey
| Jockey | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| Oisin Murphy | 3 | 0 | 0 | 0 | £4,774 | €0 | ||
| Robert Havlin | 2 | 0 | 2 | 0 | £67,725 | €0 | ||
| Tyler Heard | 1 | 1 | 0 | 0 | £3,768 | €0 |
Oisin Murphy
- Jockey
- Oisin Murphy
- Runs
- 3
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £4,774
- Prize IRE (€)
- €0
Robert Havlin
- Jockey
- Robert Havlin
- Runs
- 2
- Wins
- 0
- 2nd
- 2
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £67,725
- Prize IRE (€)
- €0
Tyler Heard
- Jockey
- Tyler Heard
- Runs
- 1
- Wins
- 1
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £3,768
- Prize IRE (€)
- €0
By trainer
| Trainer | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| John & Thady Gosden | 6 | 1 | 2 | 0 | £76,267 | €0 |
John & Thady Gosden
- Trainer
- John & Thady Gosden
- Runs
- 6
- Wins
- 1
- 2nd
- 2
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £76,267
- Prize IRE (€)
- €0
By headgear
| Headgear | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| No headgear | 6 | 1 | 2 | 0 | £76,267 | €0 |
No headgear
- Headgear
- No headgear
- Runs
- 6
- Wins
- 1
- 2nd
- 2
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £76,267
- Prize IRE (€)
- €0
Headgear codes as declared: b blinkers, v visor, p cheekpieces, t tongue strap, h hood, e/s eyeshield.
By days since last run
| Days since last run | Runs | Wins | 2nd | 3rd | Win % | Place % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|
| Debut / no previous run | 1 | 0 | 0 | 0 | £2,416 | €0 | ||
| 15 to 30 days | 3 | 1 | 1 | 0 | £58,729 | €0 | ||
| 31 to 60 days | 1 | 0 | 1 | 0 | £13,975 | €0 | ||
| 61 to 120 days | 1 | 0 | 0 | 0 | £1,148 | €0 |
Debut / no previous run
- Days since last run
- Debut / no previous run
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £2,416
- Prize IRE (€)
- €0
15 to 30 days
- Days since last run
- 15 to 30 days
- Runs
- 3
- Wins
- 1
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £58,729
- Prize IRE (€)
- €0
31 to 60 days
- Days since last run
- 31 to 60 days
- Runs
- 1
- Wins
- 0
- 2nd
- 1
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £13,975
- Prize IRE (€)
- €0
61 to 120 days
- Days since last run
- 61 to 120 days
- Runs
- 1
- Wins
- 0
- 2nd
- 0
- 3rd
- 0
- Win %
- Place %
- Prize GB (£)
- £1,148
- Prize IRE (€)
- €0
Counted from the previous run in Britain or Ireland; runs abroad are not seen.
Pedigree
Pedigree
Sire branchSea The Stars (IRE)
Parent · 1
Grandparents · 2
- Sire's sireCape Cross (IRE)
- Sire's damUrban Sea (USA)
Great-grandparents · 4
- Sire's sire's sireNot traced
- Sire's sire's damNot traced
- Sire's dam's sireNot traced
- Sire's dam's damNot traced
Dam branchSequester (GB)
Parent · 1
Grandparents · 2
- Dam's sireSelkirk (USA)
- Dam's damAl Theraab (USA)
Great-grandparents · 4
- Dam's sire's sireNot traced
- Dam's sire's damNot traced
- Dam's dam's sireRoberto (USA)
- Dam's dam's damNot traced
Breeding card
Female line
- Sequester (GB) · by Selkirk (USA) · 3 winners from 4 runners
- Al Theraab (USA) · by Roberto (USA) · 6 winners from 12 runners
- Golden Lamb (USA) · 1 winners from 2 runners
Sire, dam and damsire
| Sire | Dam | Damsire | Breeder | Foaled | Colour | Sex | Sire's avg winning distance | Damsire's avg winning distance |
|---|---|---|---|---|---|---|---|---|
| Sea The Stars (IRE) | Sequester (GB) | Selkirk (USA) | Bjorn Nielsen | 20 Feb 22 | chestnut | filly | Flat 10.8f · NH 2m2f | Flat 8.4f · NH 2m2½f |
Sea The Stars (IRE)
- Damsire
- Selkirk (USA)
- Breeder
- Bjorn Nielsen
- Foaled
- 20 Feb 22
- Colour
- chestnut
- Sex
- filly
- Sire's avg winning distance
- Flat 10.8f · NH 2m2f
- Damsire's avg winning distance
- Flat 8.4f · NH 2m2½f
Progeny of Sea The Stars (IRE) in this horse's best conditions
| Condition | Runs | Wins | Placed | Win % | Place % | This horse runs | This horse wins |
|---|---|---|---|---|---|---|---|
| All Flat runs | 7,280 | 1,181 | 2,734 | 6 | 1 | ||
| At 12f to 13f | 2,016 | 352 | 778 | 5 | 1 | ||
| On AW going | 2,255 | 379 | 883 | 2 | 1 | ||
| At 12f to 13f on AW going | 608 | 97 | 259 | 2 | 1 |
All Flat runs
- Condition
- All Flat runs
- Runs
- 7,280
- Wins
- 1,181
- Placed
- 2,734
- Win %
- Place %
- This horse runs
- 6
- This horse wins
- 1
At 12f to 13f
- Condition
- At 12f to 13f
- Runs
- 2,016
- Wins
- 352
- Placed
- 778
- Win %
- Place %
- This horse runs
- 5
- This horse wins
- 1
On AW going
- Condition
- On AW going
- Runs
- 2,255
- Wins
- 379
- Placed
- 883
- Win %
- Place %
- This horse runs
- 2
- This horse wins
- 1
At 12f to 13f on AW going
- Condition
- At 12f to 13f on AW going
- Runs
- 608
- Wins
- 97
- Placed
- 259
- Win %
- Place %
- This horse runs
- 2
- This horse wins
- 1
Best distance band and going band are where this horse has most wins (then places, then runs) in its main code. Sire figures: all British and Irish runs by the sire's progeny since 1990.
Sea The Stars (IRE) × Selkirk (USA) mares (the cross)
| Code | Runners | Winners | Winners % | Black-type winners | Runs | Wins | 2nd/3rd | Win % | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|---|---|---|---|---|
| Flat | 8 | 6 | 0 | 30 | 6 | 9 | £229,199 | €0 |
Flat
- Code
- Flat
- Runners
- 8
- Winners
- 6
- Winners %
- Black-type winners
- 0
- Runs
- 30
- Wins
- 6
- 2nd/3rd
- 9
- Win %
- Prize GB (£)
- £229,199
- Prize IRE (€)
- €0
All British and Irish runners by this sire out of mares by this damsire, since 1990 (includes this horse). Black type = Group/Grade 1-3 or Listed winner.
Best of the cross
| Horse | Runs | Wins | Black-type wins | Prize GB (£) | Prize IRE (€) |
|---|---|---|---|---|---|
| Jammrah (GB) | 1 | 1 | 0 | £5,940 | €0 |
| Starletina (IRE) | 2 | 1 | 0 | £2,911 | €0 |
| Sea The Bloom (GB) | 5 | 1 | 0 | £4,272 | €0 |
| Queen Of The Stars (GB) | 5 | 1 | 0 | £4,846 | €0 |
| Understudy (GB) | 6 | 1 | 0 | £76,267 | €0 |
| American Flag (IRE) | 6 | 1 | 0 | £9,551 | €0 |
| Daryz (FR) | 2 | 0 | 0 | £125,412 | €0 |
| Azophi (IRE) | 3 | 0 | 0 | £0 | €0 |
Jammrah (GB)
- Horse
- Jammrah (GB)
- Runs
- 1
- Wins
- 1
- Black-type wins
- 0
- Prize GB (£)
- £5,940
- Prize IRE (€)
- €0
Starletina (IRE)
- Horse
- Starletina (IRE)
- Runs
- 2
- Wins
- 1
- Black-type wins
- 0
- Prize GB (£)
- £2,911
- Prize IRE (€)
- €0
Sea The Bloom (GB)
- Horse
- Sea The Bloom (GB)
- Runs
- 5
- Wins
- 1
- Black-type wins
- 0
- Prize GB (£)
- £4,272
- Prize IRE (€)
- €0
Queen Of The Stars (GB)
- Runs
- 5
- Wins
- 1
- Black-type wins
- 0
- Prize GB (£)
- £4,846
- Prize IRE (€)
- €0
Understudy (GB)
- Horse
- Understudy (GB)
- Runs
- 6
- Wins
- 1
- Black-type wins
- 0
- Prize GB (£)
- £76,267
- Prize IRE (€)
- €0
American Flag (IRE)
- Horse
- American Flag (IRE)
- Runs
- 6
- Wins
- 1
- Black-type wins
- 0
- Prize GB (£)
- £9,551
- Prize IRE (€)
- €0
Daryz (FR)
- Horse
- Daryz (FR)
- Runs
- 2
- Wins
- 0
- Black-type wins
- 0
- Prize GB (£)
- £125,412
- Prize IRE (€)
- €0
Azophi (IRE)
- Horse
- Azophi (IRE)
- Runs
- 3
- Wins
- 0
- Black-type wins
- 0
- Prize GB (£)
- £0
- Prize IRE (€)
- €0
Top 12 by best win level, then wins.
Ratings
Official ratings
| Code | Current OR | Highest OR | Lowest OR | Rated runs |
|---|---|---|---|---|
| Flat | 101 | 102 | 101 | 3 |
Flat
- Code
- Flat
- Current OR
- 101
- Highest OR
- 102
- Lowest OR
- 101
- Rated runs
- 3
Current OR here is the mark carried on the latest run in each code; the page header uses a newer declared mark where one exists.
Official rating by run
| Date | Course | Code | OR | Change | Pos |
|---|---|---|---|---|---|
| 20 Nov 25 | Lingfield (AW) | Flat | 101 | -1 | 2/13 |
| 26 Sep 25 | Newmarket | Flat | 102 | 0 | 6/11 |
| 19 Jul 25 | Newmarket (July) | Flat | 102 | - | 5/10 |
- 2/1320 Nov 25 · Lingfield (AW)
All fields
- Date
- 20 Nov 25
- Course
- Lingfield (AW)
- Code
- Flat
- OR
- 101
- Change
- -1
- Pos
- 2/13
- 6/1126 Sep 25 · Newmarket
All fields
- Date
- 26 Sep 25
- Course
- Newmarket
- Code
- Flat
- OR
- 102
- Change
- 0
- Pos
- 6/11
- 5/1019 Jul 25 · Newmarket (July)
All fields
- Date
- 19 Jul 25
- Course
- Newmarket (July)
- Code
- Flat
- OR
- 102
- Change
- -
- Pos
- 5/10
Current mark v winning marks
| Code | Current OR | OR last run | Change | Highest OR | v highest |
|---|---|---|---|---|---|
| Flat | 101 | 101 | 0 | 102 | -1 |
Flat
- Code
- Flat
- Current OR
- 101
- OR last run
- 101
- Change
- 0
- Highest OR
- 102
- v highest
- -1
Differences are current OR minus the mark shown (positive = higher now). Current OR in the main code uses a newer declared or published mark where one exists.
Family
Dam summary
- G1 winners
- 0
- Produce
- 3 winners from 4 runners
Full siblings
- American Flag (IRE)1W · 6R
Half siblings
By Golden Horn (GB)
- Auriferous (IRE)1W · 20R
By Mastercraftsman (IRE)
- Commandeer (IRE)0W · 2R
Female line
- 1Sequester (GB) · by Selkirk (USA)
- 2Al Theraab (USA) · by Roberto (USA)
- 3Golden Lamb (USA)
Notable relatives
Uncle (out of 2nd dam)
- Albert Hall (GB)1W · 5R · 1 black-type
In brief
How old is Understudy?
Understudy (GB) is a 4-year-old chestnut filly, foaled on 20 February 2022.
Who are the sire and dam of Understudy?
Understudy (GB) is by Sea The Stars (IRE) out of Sequester (GB), a daughter of Selkirk (USA), and was bred by Bjorn Nielsen.
Who trains Understudy?
Understudy (GB) is trained by John & Thady Gosden and owned by B E Nielsen, and has run for no other trainer in Britain or Ireland.
What is Understudy's race record?
In Britain and Ireland, Understudy (GB) has won 1 of 6 races (17%). Runs abroad (for example in France, Dubai or the USA) are not included.
What is Understudy's biggest win?
Understudy (GB)'s only win in Britain or Ireland came in the Sky Sports Racing Sky 415 Fillies' Novice Stakes at Southwell (AW) on 31 May 2025.
Has Understudy ever been beaten?
Understudy (GB) has been beaten 5 times in 6 runs in Britain and Ireland, the first time on 2 May 2025 at Newmarket (4th of 6).
What is Understudy's official rating?
Understudy (GB) is officially rated 101 on the Flat (career high 102).
When did Understudy last run?
Understudy (GB) last ran in Britain or Ireland on 20 November 2025 at Lingfield (AW) in the BetMGM River Eden EBF Fillies' Stakes, finishing 2nd of 13.
Is Understudy related to any top horses?
Understudy (GB)'s black-type relatives in Britain and Ireland include Albert Hall (GB) (uncle, Group 2 winner), from the Golden Lamb (USA) family.
What is Understudy's record at Newmarket?
Understudy (GB) has run most often at Newmarket, with no wins from 2 runs there.
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