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Horse profile

Diamond Bear (USA)

3yo filly (at last run, Oct 2017) · Last trainer Sir Mark Prescott Bt · Last owner Donald R Dizney
by First Dude (USA) out of Lady Mariah (USA) (Giant's Causeway)
9 runs · 5 courses · from Sep 2016
As at 27 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 24 Oct 2017 — 3,290 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2017 · 4th of 14 Won at Brighton Last raced off OR 70
KTB Profile

Diamond Bear (USA) is 1 from 9, the win coming at Class 5 level. Hasn't won since Oct 2016. The win came on turf — 0 from 4 on the all-weather.

Based on 9 archived runs · updated 27 Oct 2026
KTB at a glance Won on turf, 0 on AW Win at Class 5
Official rating70↓ 6lb off peak
70 70–76

KTB Speed and Rating

KTB Speed

Best recent Speed 100 the best of the last 3 graded (A or B) runs · Kempton (AW), 25 Sep 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 8 figures · best 111A · median 90.5
GoingRunsBestMedianSince 27 Oct 2025
Standard (AW)4100B79.5—
Good3111A101—
Good to Firm1———
DistanceRunsBestMedianSince 27 Oct 2025
1m2f – 1m4f4100B86—
1m – 1m1f3111A101—
6f – 7f1———

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 8 figures from 8 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 75A the best of the last 3 rated runs · Kempton (AW), 24 Oct 2017 Official rating 70 at the last run, 24 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 9 figures · best 87A · median 68
GoingRunsBestMedianSince 27 Oct 2025
Standard (AW)475A68—
Good387A72—
Good to Firm268A65.5—
DistanceRunsBestMedianSince 27 Oct 2025
1m2f – 1m4f475A68—
1m – 1m1f387A72—
6f – 7f268A65.5—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 9 figures from 9 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
First Dude (USA)

Progeny in our archive have won 11.1% of 9 runs since Jan 2008 (1 horse). A small sample.

GoingRunsWinsSRvs sireThis horse
Good to Firm200%−11.10 from 2
Good3133.3%+22.21 from 3
Standard (AW)400%−11.10 from 4
Distance (all codes)RunsWinsSRvs sireThis horse
6f – 7f200%−11.10 from 2
1m – 1m1f3133.3%+22.21 from 3
1m2f – 1m4f400%−11.10 from 4

Flat and jumps together (all codes) · since Jan 2008 · as at 27 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Lady Mariah (USA) (Giant's Causeway)

No other produce in our archive. It holds racing in Great Britain, Ireland and France from 2005, so siblings racing elsewhere won’t appear here.

Record by conditions

GoingRunsWinsSR£1
Standard (AW) 4 0 0% −4.00
Good 3 1 33% +6.00
Good to Firm 2 0 0% −2.00

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

CourseRunsWinsSR£1
Kempton (AW) 2 0 0% −2.00
Chelmsford City (AW) 2 0 0% −2.00
Yarmouth 2 0 0% −2.00
Brighton 2 1 50% +7.00
Epsom Downs 1 0 0% −1.00

DistanceRunsWinsSR£1
1m2f – 1m4f 4 0 0% −4.00
1m – 1m1f 3 1 33% +6.00
6f – 7f 2 0 0% −2.00

JockeyRunsWinsSR£1
Luke Morris 7 1 14% +2.00
Rosie Jessop 1 0 0% −1.00
Ryan Powell 1 0 0% −1.00

HeadgearRunsWinsSR£1
None 8 1 13% +1.00
Visor 1 0 0% −1.00

SeasonRunsWinsSR£1
2017 6 0 0% −6.00
2016 3 1 33% +6.00

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 · 6 runs
24 Oct 17+19d Kempton (AW) 32Red On The App Store Handicap Class 5 · 11f · Standard To Slow · 14 ran 4/14 2¼ 9-5 7082B75A Luke Morris 10/1
05 Oct 17+10d Chelmsford City (AW) Bet toteWin At betfred.com Fillies' Handicap Class 5 · 10f · Standard · 14 ran 11/14 6 9-3 7177C49C Luke Morris 5/1F
25 Sep 17+11d Kempton (AW) Winners Are Welcome At Matchbook Handicap Class 4 · 10f · Standard To Slow · 14 ran 4/14 ½ 8-7 71100B73A Luke Morris 20/1
14 Sep 17+92d Epsom Downs Focus Rigging Handicap Class 5 · 8.5f · Good · 7 ran 4/7 ½ 9-2 7391A72A Rosie Jessop 8/1
14 Jun 17+30d Yarmouth Seadell Shops & Holiday Chalets Hemsby Handicap Class 5 · 10f · Good To Firm · 10 ran 10/10 1¾ 9-6 7690A63A Luke Morris 12/1
15 May 17+214d Brighton Fxelectrical.com Handicap Class 4 · 8f · Good · 6 ran 5/6 ¾ 8-11 76101A63B Luke Morris 11/4
2016 · 3 runs
13 Oct 16+14d Brighton starsportsbet.co.uk EBF Median Auction Maiden Stakes Class 5 · 8f · Good · 9 ran 1/9 9-0 —111A87A Luke Morris 8/1
29 Sep 16+16d Chelmsford City (AW) toteexacta Maiden Fillies' Stakes (Plus 10) Class 4 · 7f · Standard · 12 ran 9/12 ½ 9-0 —74A63A Ryan Powell 25/1
13 Sep 16 Yarmouth British Stallion Studs EBF Maiden Fillies' Stakes (Plus 10) Class 4 · 6f · Good To Firm · 9 ran 5/9 1¾ 9-0 ——68A Luke Morris 80/1

Quick answers

How many races has Diamond Bear won?
Diamond Bear (USA) won 1 of 9 archived starts between 2016 and 2017, a strike rate of 11.1%. Placed 1 time in total (11.1% of starts).
Who trained Diamond Bear?
Diamond Bear (USA) was trained by Sir Mark Prescott Bt on the most recent run on record, at Kempton (AW) on 24 October 2017.
Who is Diamond Bear's sire?
Diamond Bear (USA) is by First Dude (USA) out of Lady Mariah (USA), whose sire is Giant's Causeway.
What going does Diamond Bear prefer?
Diamond Bear (USA) has the best record on good going: 1 win from 3 starts (33.3%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is Diamond Bear's official rating?
The most recent official rating on record is 70, from the run on 24 October 2017. The highest on record is 76.
What is Diamond Bear's sire's record?
First Dude (USA)'s progeny in our archive have won 11.1% of 9 runs since Jan 2008 (1 horse), Flat and jumps together. A small sample.

Record shown from September 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.