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Horse profile

Miss Osier (GB)

3yo filly (at last run, Oct 2017) · Last trainer Rae Guest · Last owner Peter Saunders Rae Guest
by Mastercraftsman (IRE) out of Lacy Sunday (USA) (King's Best)
11 runs · 10 courses · from Oct 2016
As at 28 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 16 Oct 2017 — 3,298 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2017 · 4th of 9 Won at Leicester Last raced off OR 62
KTB Profile

Miss Osier (GB) is 1 from 11, the win coming at Class 6 level. Hasn't won since Jul 2017. The win came on turf — 0 from 4 on the all-weather.

Based on 11 archived runs · updated 28 Oct 2026
KTB at a glance Won on turf, 0 on AW Win at Class 6
Official rating62↓ 3lb off peak
62 62–65

KTB Speed and Rating

KTB Speed

Best recent Speed 94 the best of the last 3 graded (A or B) runs · Yarmouth, 16 Oct 2017

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 →

Flat 10 figures · best 94A · median 72
GoingRunsBestMedianSince 28 Oct 2025
Standard (AW)486A72.5—
Good394A77—
Good to Firm256C48—
Good to Soft1———
DistanceRunsBestMedianSince 28 Oct 2025
1m – 1m1f694A74.5—
6f – 7f372A64—
1m2f – 1m4f1———

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 10 figures from 10 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 72A the best of the last 3 rated runs · Sandown, 1 Sep 2017 Official rating 62 at the last run, 16 Oct 2017

What the horse achieved in each race, in pounds on the official-rating scale, from the weight carried, the lengths beaten and the race's own level solved across the archive — never the market, never the official rating as a starting point. The headline is the best of the horse's last three rated runs on that code. A, B or C on a run is how much known form was in that race. What this means →

Flat 10 figures · best 72A · median 65.5
GoingRunsBestMedianSince 28 Oct 2025
Standard (AW)465A52—
Good369A69—
Good to Firm270A62.5—
Good to Soft1———
DistanceRunsBestMedianSince 28 Oct 2025
1m – 1m1f670A67.5—
6f – 7f372A55—
1m2f – 1m4f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 10 figures from 10 runs · as at 4 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

Sire
Mastercraftsman (IRE)

Progeny in our archive have won 10.6% of 11,634 runs since Jan 2008 (842 horses).

GoingRunsWinsSRvs sireThis horse
Firm2328.7%−1.9—
Good to Firm1,34515611.6%+11 from 2
Good2,97434511.6%+10 from 3
Good to Soft1,53216610.8%+0.20 from 1
Soft1,9691829.2%−1.40 from 1
Heavy6607010.6%0—
Standard (AW)3,1303109.9%−0.70 from 4
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f5459.3%−1.3—
6f – 7f1,3841198.6%−20 from 3
1m – 1m1f2,3322179.3%−1.31 from 7
1m2f – 1m4f3,81643811.5%+0.90 from 1
1m5f – 2m2,58728511%+0.4—
2m1f – 2m4f1,08711410.5%−0.1—
2m5f – 3m3264413.5%+2.9—
Over 3m48918.8%+8.2—

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

Dam
Lacy Sunday (USA) (King's Best)

3 siblings in the archive, 0 winners.

ProduceRunsWinsWin tripsBest grade
Sunday Best (GB)70——
Drumshanbo Destiny (FR)80——
Sanandaj (IRE)10——

Record by conditions

GoingRunsWinsSR£1
Standard (AW) 4 0 0% −4.00
Good 3 0 0% −3.00
Good to Firm 2 1 50% +3.00
Good to Soft 1 0 0% −1.00
Soft 1 0 0% −1.00

ClassRunsWinsSR£1
Class 6 5 1 20% +0.00
Class 5 4 0 0% −4.00
Class 4 1 0 0% −1.00

CourseRunsWinsSR£1
Chelmsford City (AW) 2 0 0% −2.00
Yarmouth 1 0 0% −1.00
Sandown 1 0 0% −1.00
Salisbury 1 0 0% −1.00
Compiegne (FR) 1 0 0% −1.00
Leicester 1 1 100% +4.00
Lingfield (AW) 1 0 0% −1.00
Nottingham 1 0 0% −1.00
Southwell (AW) 1 0 0% −1.00
Newmarket 1 0 0% −1.00

DistanceRunsWinsSR£1
1m – 1m1f 7 1 14% −2.00
6f – 7f 3 0 0% −3.00
1m2f – 1m4f 1 0 0% −1.00

JockeyRunsWinsSR£1
Tom Queally 2 1 50% +3.00
Noel Garbutt 2 0 0% −2.00
Martin Dwyer 2 0 0% −2.00
Martin Harley 1 0 0% −1.00
Silvestre De Sousa 1 0 0% −1.00
David Probert 1 0 0% −1.00
Maxime Guyon 1 0 0% −1.00
Luke Morris 1 0 0% −1.00

HeadgearRunsWinsSR£1
Cheekpieces 6 1 17% −1.00
None 5 0 0% −5.00

SeasonRunsWinsSR£1
2017 9 1 11% −4.00
2016 2 0 0% −2.00

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

DateCourseRace PosBtn Wgt ORSpdKTB Jockey SP
2017 · 9 runs
16 Oct 17+18d Yarmouth Great Yarmouth & Caister Golf Club Mechants Gallop Handicap (Str) (Div 2) Class 6 · 8f · Good · 9 ran 4/9 ½ 9-1 6294A69A Martin Harley 11/2
28 Sep 17+27d Chelmsford City (AW) Bet totetrifecta At betfred.com Handicap (Div 1) Class 6 · 7f · Standard · 10 ran 9/10 2 9-4 6264A43A Tom Queally 5/1
01 Sep 17+15d Sandown Happy 10th Birthday Amethyst Lettings Fillies' Handicap Class 5 · 7f · Good To Soft · 9 ran 3/9 3 8-11 6472A72A Silvestre De Sousa 4/1
17 Aug 17+23d Salisbury Bet toteexacta At betfred.com Handicap (Div 2) Class 6 · 8f · Good · 12 ran 5/12 3 9-6 6560A69A David Probert 5/1
25 Jul 17+17d Compiegne (FR) Prix du Ru de Berne (Claimer) (3yo Fillies) (Turf) 8f · Soft · 8 ran 8/8 12 8-11 ——— Maxime Guyon 4/1
08 Jul 17+39d Leicester H.A.C. Group Of Companies Handicap (Div 1) Class 6 · 8f · Good To Firm · 8 ran 1/8 9-2 6240A70A Tom Queally 4/1
30 May 17+17d Lingfield (AW) Bet365 Maiden Auction Stakes Class 5 · 10f · Standard · 5 ran 5/5 shd 8-11 6373C51B Noel Garbutt 5/2
13 May 17+114d Nottingham Download The App Dg Cars Handicap Class 5 · 8.5f · Good · 13 ran 4/13 1½ 8-5 6277C66A Noel Garbutt 50/1
19 Jan 17+56d Southwell (AW) 32redsport.com Maiden Auction Stakes Class 6 · 8f · Standard · 6 ran 3/6 3¼ 8-9 —72B53B Luke Morris 4/1
2016 · 2 runs
24 Nov 16+26d Chelmsford City (AW) Bet toteexacta Maiden Auction Stakes Class 5 · 8f · Standard · 11 ran 3/11 ¾ 8-7 —86A65A Martin Dwyer 33/1
29 Oct 16 Newmarket EBF Stallions Prestige Vehicles Maiden Fillies' Stakes (Plus 10) (Div 1) Class 4 · 7f · Good To Firm · 13 ran 12/13 1 9-0 —56C55C Martin Dwyer 100/1

Quick answers

How many races has Miss Osier won?
Miss Osier (GB) won 1 of 11 archived starts between 2016 and 2017, a strike rate of 9.1%. Placed 3 times in total (27.3% of starts).
Who trained Miss Osier?
Miss Osier (GB) was trained by Rae Guest on the most recent run on record, at Yarmouth on 16 October 2017.
Who is Miss Osier's sire?
Miss Osier (GB) is by Mastercraftsman (IRE) out of Lacy Sunday (USA), whose sire is King's Best.
What is Miss Osier's official rating?
The most recent official rating on record is 62, from the run on 16 October 2017. The highest on record is 65.
What is Miss Osier's sire's record?
Mastercraftsman (IRE)'s progeny in our archive have won 10.6% of 11,634 runs since Jan 2008 (842 horses), Flat and jumps together.
Who are Miss Osier's siblings?
Out of Lacy Sunday (USA), Miss Osier (GB) has 3 other produce in our archive, 0 of them winners. As at Oct 2026.

Record shown from October 2016. Our archive holds racing in Great Britain, Ireland and France from January 2005. Runs in other countries are not in it, and earlier runs are not available from our data provider. In-running comments are available from 2024 onward.