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Horse profile

Diamond Du Berlais (FR)

5yo mare · Trainer W P Mullins · Owner P Davies
by Zarak (FR) out of Crystal Du Berlais (FR) (Great Pretender)
17 runs · 6 courses · from Apr 2024
As at 8 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
Won last time out 2 wins · Killarney (IRE) & Ludlow Last run 20 Aug 2026 · 1st of 5 Last raced off OR 131
KTB Profile

Diamond Du Berlais is a mare who has won two of 17 starts on turf, both at Class 4 level over 2m5f – 3m. She won on good ground at Killarney in Aug 2026 and on soft ground at Ludlow in Feb 2026. Her last run, at Killarney in Aug 2026, was a win in the Irish Stallion Farms EBF Novice Hurdle off an official rating of 131. She has raced nine times without success at Auteuil.

Based on 17 archived runs · run-style from 5 commented runs since Feb 2026 · updated 8 Nov 2026
Official rating131↓ 1lb off peak
131 131–132

KTB Speed and Rating

KTB Speed

Best recent Speed 123 the best of the last 2 graded (A or B) runs · Killarney (IRE), 16 Jul 2026

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 →

Jumps 4 figures · best 123A · median 93
GoingRunsBestMedianSince 8 Nov 2025
Good3123A963 runs · 123 / 96
Soft1——1 run · —
DistanceRunsBestMedianSince 8 Nov 2025
2m1f – 2m4f2123A106.52 runs · 123 / 106.5
2m5f – 3m1——1 run · —
1m5f – 2m1——1 run · —

Of 5 runs looked at, 1 has no figure: obstacles omitted — the race ran a shortened course (1).

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 4 figures from 5 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 132B the best of the last 3 rated runs · Killarney (IRE), 20 Aug 2026 Official rating 131 at the last run, 20 Aug 2026

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 — its best recent day. The KTB Rating on a racecard is a different reading of the same figures: the level the horse has been running to, an average of up to its last six runs with the latest counting most, so the two can differ. A, B or C on a run is how much known form was in that race. What this means →

Jumps 5 figures · best 137A · median 128
GoingRunsBestMedianSince 8 Nov 2025
Good3137A1323 runs · 137 / 132
Soft2125A1232 runs · 125 / 123
DistanceRunsBestMedianSince 8 Nov 2025
2m5f – 3m2132B128.52 runs · 132 / 128.5
2m1f – 2m4f2137A132.52 runs · 137 / 132.5
1m5f – 2m1——1 run · —

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 5 figures from 5 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 from 5 analysed runs since Feb 2026

  • Prominent 2 (40%) · 1 win
  • Led 2 (40%) · 1 win
  • Held up 1 (20%) · 0 wins

Pedigree intelligence

Sire

Progeny in our archive have won 15.2% of 2,030 runs since May 2021 (329 horses).

Strongest on heavy going: 18.3% from 278. Weakest on standard (aw) going: 10.7% from 374. Strongest over 1m5f – 2m (all codes): 20.6% from 257. Weakest over 6f – 7f (all codes): 6.9% from 203.

GoingRunsWinsSRvs sireThis horse
Firm200%−15.2—
Good to Firm811316%+0.8—
Good3014916.3%+1.11 from 3
Good to Soft4166315.1%−0.1—
Soft5789316.1%+0.91 from 7
Heavy2785118.3%+3.10 from 7
Standard (AW)3744010.7%−4.5—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f100%−15.2—
6f – 7f203146.9%−8.3—
1m – 1m1f5999916.5%+1.3—
1m2f – 1m4f75811214.8%−0.4—
1m5f – 2m2575320.6%+5.40 from 3
2m1f – 2m4f1792614.5%−0.70 from 12
2m5f – 3m32515.6%+0.42 from 2
Over 3m100%−15.2—

Flat and jumps together (all codes) · since May 2021 · as at 7 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Crystal Du Berlais (FR) (Great Pretender)

4 siblings in the archive, 1 winner — best of them Ostrava Du Berlais (FR) (2 wins).

The wins came over 2m–2m2f; the highest grade won is Class 4 (Ostrava Du Berlais (FR)).

ProduceRunsWinsWin tripsBest grade
Ostrava Du Berlais (FR)2222m–2m2fClass 4
Prague Du Berlais (FR)10——
Valtice Du Berlais (FR)60——
Pavlova Du Berlais (FR)70——

Record by conditions

GoingRunsWinsSR£1
Soft 7 1 14% −5.70
Heavy 7 0 0% −7.00
Good 3 1 33% −1.56

ClassRunsWinsSR£1
Class 1 1 0 0% −1.00
Class 4 1 1 100% +0.30

CourseRunsWinsSR£1
Auteuil (FR) 9 0 0% −9.00
Compiegne (FR) 3 0 0% −3.00
Killarney (IRE) 2 1 50% −0.56
Punchestown 1 0 0% −1.00
Cheltenham 1 0 0% −1.00
Ludlow 1 1 100% +0.30

DistanceRunsWinsSR£1
2m1f – 2m4f 12 0 0% −12.00
1m5f – 2m 3 0 0% −3.00
2m5f – 3m 2 2 100% +0.74

JockeyRunsWinsSR£1
Clement Lefebvre 6 0 0% −6.00
Mr P W Mullins 3 1 33% −1.70
Brian Hayes 2 1 50% −0.56
Nicolas Gauffenic 2 0 0% −2.00
Ludovic Philipperon 2 0 0% −2.00
Thomas Beaurain 1 0 0% −1.00
Kevin Nabet 1 0 0% −1.00

HeadgearRunsWinsSR£1
Tongue tie 15 2 13% −12.26
Tongue tie + cheekpieces 2 0 0% −2.00

SeasonRunsWinsSR£1
2026 5 2 40% −2.26
2025 5 0 0% −5.00
2024 7 0 0% −7.00

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
2026 · 5 runs
20 Aug 26+35d Killarney (IRE) Irish Stallion Farms EBF Novice Hurdle 2m7f · Good · 5 ran Up with the pace - moved to the front approaching 3 out and drifted left at that obstacle - continued left for a stride after - built a clear advantage before 2 out - in command before the last - kept on strongly - value for more than the winning margin 1/5 10-11 13196C132B Brian Hayes 4/9F
16 Jul 26+77d Killarney (IRE) D. Ivo O'Sullivan Memorial Irish EBF Mares Hurdle 2m4½f · Good · 6 ran Edged in front early - challenged and passed before 2 out - slipped to 3rd before the last and unable to reach the front pair late 3/6 3½ 10-11 132123A128B Brian Hayes 100/30
30 Apr 26+49d Punchestown Close Brothers Irish EBF Mares Novice Hurdle (Listed) 2m½f · Yielding · 5 ran Settled behind the front group - blundered first - 4th three out - asked for effort entering straight - shared 2nd approaching last - held no more inside final furlong to finish 4th 4/5 ½ 11-4 13268C121B Mr P W Mullins 7/4
12 Mar 26+36d Cheltenham Ryanair Mares' Novices' Hurdle (Grade 2) (Registered As The Dawn Run Mares' Novices' Hurdle) (GBB Race) Class 1 · 2m1f · Good · 22 ran Settled towards the back of the pack early - roused after three out and pushed on approaching two out - crept into contention before the last - couldn't land a blow on the leaders - dropped away close home 6/22 ½ 11-4 13290B137A Mr P W Mullins 33/1
04 Feb 26+249d Ludlow C M Bespoke Care Mares' Maiden Hurdle (GBB Race) Class 4 · 2m5f · Soft · 12 ran Shared front spot early - lost that spot before the 3rd - crept back into contention 3 out - edged clear approaching the last after driving on - ran out easy winner 1/12 11-5 132—125A Mr P W Mullins 30/100F
2025 · 5 runs
31 May 25+4d Auteuil (FR) Prix Questarabad (Hurdle) Handicap) (4yo) (Turf) 2m4½f · Very Soft · 10 ran 8/10 1¼ 10-10 ——— Clement Lefebvre 9/1
27 May 25+9d Auteuil (FR) Prix Christian de Tredern (Hurdle) (4-5yo Fillies & Mares) (Turf) 2m2f · Very Soft · 10 ran 3/10 nk 10-3 ——— Thomas Beaurain 28/1
18 May 25+45d Auteuil (FR) Prix Alain du Breil - Course de Haies de Printemps des 4yo (Hurdle) (Turf) 2m3½f · Very Soft · 15 ran PU/15 — 10-3 ——— Clement Lefebvre 30/1
03 Apr 25+10d Auteuil (FR) Prix de Marsan (Hurdle) (Listed Handicap) (4yo) (Turf) 2m2f · Very Soft · 7 ran 4/7 6½ 10-12 ——— Nicolas Gauffenic 10/1
24 Mar 25+106d Compiegne (FR) Prix Durtain (Hurdle) () (4yo) (Turf) 2m2f · Heavy · 7 ran 5/7 1¼ 10-12 ——— Nicolas Gauffenic 10/1
2024 · 7 runs
08 Dec 24+9d Auteuil (FR) Prix Chalet (Hurdle) () (3yo Fillies) (Turf) 2m1½f · Heavy · 10 ran 5/10 4 10-12 ——— Clement Lefebvre 4/1
29 Nov 24+13d Compiegne (FR) Prix General de Saint-Didier (Hurdle) (3yo) (Turf) 2m1f · Heavy · 7 ran 2/7 3½ 10-1 ——— Clement Lefebvre 7/1
16 Nov 24+34d Auteuil (FR) Haras d'Etreham - Prix Magalen Bryant (Hurdle) (3yo Fillies) (Turf) 2m2f · Heavy · 7 ran 3/7 1 10-3 ——— Ludovic Philipperon 13/1
13 Oct 24+10d Auteuil (FR) Prix Magne (Hurdle) (3yo Fillies) (Turf) 2m2f · Heavy · 7 ran F/7 — 10-3 ——— Clement Lefebvre 38/1
03 Oct 24+159d Compiegne (FR) Prix d'Aix (Hurdle) (Conditions) (3yo) (Turf) 2m1f · Heavy · 8 ran 3/8 ½ 10-8 ——— Clement Lefebvre 84/10
27 Apr 24+21d Auteuil (FR) Prix Girofla (Hurdle) () (3yo Fillies) (Turf) 1m7f · Very Soft · 5 ran 5/5 20 10-3 ——— Kevin Nabet 22/5
06 Apr 24 Auteuil (FR) Prix Champoreau (Hurdle) (Conditions) (3yo Fillies) (Turf) 1m7f · Heavy · 6 ran 2/6 1¾ 10-6 ——— Ludovic Philipperon 83/10

Quick answers

How many races has Diamond Du Berlais won?
Diamond Du Berlais (FR) won 2 of 17 archived starts between 2024 and 2026, a strike rate of 11.8%. Placed 6 times in total (35.3% of starts).
Who trains Diamond Du Berlais?
Diamond Du Berlais (FR) is trained by W P Mullins, who saddled the horse on its most recent run on 20 August 2026.
Who is Diamond Du Berlais's sire?
Diamond Du Berlais (FR) is by Zarak (FR) out of Crystal Du Berlais (FR), whose sire is Great Pretender.
What going does Diamond Du Berlais prefer?
Diamond Du Berlais (FR) 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 Du Berlais's official rating?
The most recent official rating on record is 131, from the run on 20 August 2026. The highest on record is 132.
What is Diamond Du Berlais's sire's record?
Zarak (FR)'s progeny in our archive have won 15.2% of 2,030 runs since May 2021 (329 horses), Flat and jumps together. Strongest on heavy going: 18.3% from 278. Weakest on standard (aw) going: 10.7% from 374. Strongest over 1m5f – 2m (all codes): 20.6% from 257. Weakest over 6f – 7f (all codes): 6.9% from 203.
Who are Diamond Du Berlais's siblings?
Out of Crystal Du Berlais (FR), Diamond Du Berlais (FR) has 4 other produce in our archive, 1 of them a winner. Most wins: Ostrava Du Berlais (FR) (2). Highest grade won: Class 4 (Ostrava Du Berlais (FR)). The wins came over 2m–2m2f. As at Nov 2026.

Record shown from April 2024. Our archive holds racing in Great Britain, Ireland and France from January 2005. Any runs before that, or in other countries, are not in it. In-running comments are available from 2024 onward.