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Horse profile

Magnum Opus (IRE)

5yo gelding (at last run, Oct 2007) · Last trainer D J Murphy · Last owner Willie Mckay
by Sadler's Wells (USA) out of Summer Breeze (GB) (Rainbow Quest)
16 runs · 15 courses · from Jul 2005
As at 5 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 19 Oct 2007 — 6,956 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2007 · 14th of 15 Last raced off OR 52
KTB Profile

Magnum Opus (IRE) is yet to win from 16 starts. Best effort: 2nd of 4 at Deauville (FR) (Jul 2005). Last raced off 52, 33lb below the career-high mark.

Based on 16 archived runs · updated 5 Nov 2026
KTB at a glance OR ↓ 33lb off peak
Official rating52↓ 33lb off peak
52 52–85

KTB Speed and Rating

KTB Speed

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

KTB Rating

Best recent KTB Rating (flat) 61C the best of the last 3 rated runs · Pontefract, 20 Sep 2007 Official rating 52 at the last flat run, 19 Oct 2007

Best recent KTB Rating (jumps) 82C the best of the last 2 rated runs · Uttoxeter, 23 Nov 2006

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 →

Flat 13 figures · best 72C · median 54
GoingRunsBestMedianSince 5 Nov 2025
Good461C51—
Good to Firm356C51—
Firm261C58—
Standard (AW)1———
Good to Soft1———
Heavy1———
Soft1———
DistanceRunsBestMedianSince 5 Nov 2025
1m2f – 1m4f861C52.5—
1m5f – 2m472C58—
2m1f – 2m4f1———
Jumps 2 figures · best 82C · median 77.5
GoingRunsBestMedianSince 5 Nov 2025
Good to Soft1———
Heavy1———
DistanceRunsBestMedianSince 5 Nov 2025
1m5f – 2m282C77.5—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 15 figures from 15 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
Sadler's Wells (USA)

Progeny in our archive have won 11.3% of 4,636 runs since Jan 2008 (370 horses).

Strongest over 6f – 7f (all codes): 18.7% from 107.

GoingRunsWinsSRvs sireThis horse
Firm46715.2%+3.90 from 2
Good to Firm6449014%+2.70 from 3
Good1,24815212.2%+0.90 from 4
Good to Soft716709.8%−1.50 from 3
Soft1,08511710.8%−0.50 from 1
Heavy5135210.1%−1.20 from 2
Standard (AW)384369.4%−1.90 from 1
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f100%−11.3—
6f – 7f1072018.7%+7.4—
1m – 1m1f286279.4%−1.9—
1m2f – 1m4f1,18813411.3%00 from 9
1m5f – 2m1,39417612.6%+1.30 from 6
2m1f – 2m4f9619610%−1.30 from 1
2m5f – 3m556539.5%−1.8—
Over 3m1431812.6%+1.3—

Flat and jumps together (all codes) · since Jan 2008 · as at 4 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Summer Breeze (GB) (Rainbow Quest)

5 siblings in the archive, 3 winners — best of them Doctor Fremantle (GB) (5 wins).

The wins came over 1m–1m4½f; the highest grade won is Group 2 (Doctor Fremantle (GB)).

ProduceRunsWinsWin tripsBest grade
Doctor Fremantle (GB)1351m–1m4½fGroup 2
Summer Shower (GB)521m4f–1m4½f—
Venteuse (GB)311m2f—
Presume (GB)20——
Warm Memories (GB)70——

Record by conditions

GoingRunsWinsSR£1
Good 4 0 0% −4.00
Good to Soft 3 0 0% −3.00
Good to Firm 3 0 0% −3.00
Firm 2 0 0% −2.00
Heavy 2 0 0% −2.00
Standard (AW) 1 0 0% −1.00
Soft 1 0 0% −1.00

ClassRunsWinsSR£1
Class 6 5 0 0% −5.00
Class 5 5 0 0% −5.00
Class 4 3 0 0% −3.00
Class 3 1 0 0% −1.00
Class 2 1 0 0% −1.00

CourseRunsWinsSR£1
Pontefract 2 0 0% −2.00
Redcar 1 0 0% −1.00
Beverley 1 0 0% −1.00
Kempton (AW) 1 0 0% −1.00
Bath 1 0 0% −1.00
Yarmouth 1 0 0% −1.00
Chepstow 1 0 0% −1.00
Catterick 1 0 0% −1.00
Uttoxeter 1 0 0% −1.00
Haydock 1 0 0% −1.00
York 1 0 0% −1.00
Hamilton 1 0 0% −1.00
Nottingham 1 0 0% −1.00
Chester 1 0 0% −1.00
Deauville (FR) 1 0 0% −1.00

DistanceRunsWinsSR£1
1m2f – 1m4f 9 0 0% −9.00
1m5f – 2m 6 0 0% −6.00
2m1f – 2m4f 1 0 0% −1.00

JockeyRunsWinsSR£1
J F Egan 2 0 0% −2.00
Miss K E Cooper 1 0 0% −1.00
Mr M Seston 1 0 0% −1.00
Sophie Doyle 1 0 0% −1.00
Graham Gibbons 1 0 0% −1.00
Mr N Kinnon 1 0 0% −1.00
Jerry O'Dwyer 1 0 0% −1.00
James O'Reilly 1 0 0% −1.00
Mrs S Moore 1 0 0% −1.00
Tjade Collier 1 0 0% −1.00
Graham Lee 1 0 0% −1.00
Robbie Fitzpatrick 1 0 0% −1.00
Mrs Emma Littmoden 1 0 0% −1.00
Eddie Ahern 1 0 0% −1.00
Christophe Soumillon 1 0 0% −1.00

HeadgearRunsWinsSR£1
None 8 0 0% −8.00
Tongue tie 4 0 0% −4.00
Tongue tie + blinkers 2 0 0% −2.00
Cheekpieces 1 0 0% −1.00
Visor 1 0 0% −1.00

SeasonRunsWinsSR£1
2007 8 0 0% −8.00
2006 7 0 0% −7.00
2005 1 0 0% −1.00

TypeRunsWinsSR£1
Flat 14 0 0% −14.00
Hurdle 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 ORKTB Jockey SP
2007 · 8 runs
19 Oct 07+24d Redcar Sawfish Software Ladies' Handicap Class 6 · 1m2f · Good · 15 ran 14/15 2 9-6 5236C Miss K E Cooper 20/1
25 Sep 07+5d Beverley Come Dancing With Amateur Jockeys Amateur Riders' Handicap Class 6 · 1m2f · Good · 14 ran 8/14 1½ 11-3 5454C Mr M Seston 14/1
20 Sep 07+5d Pontefract betfair.com Apprentice Series (Round 4) Handicap Class 5 · 1m2f · Firm · 11 ran 7/11 hd 9-2 5761C Sophie Doyle 25/1
15 Sep 07+5d Kempton (AW) Digibet Handicap Class 6 · 2m · Standard · 13 ran 12/13 nk 9-11 5754C Graham Gibbons 33/1
10 Sep 07+15d Bath Amateur Riders' Maiden Handicap Class 5 · 1m5f · Firm · 7 ran 3/7 7 10-9 5755C Mr N Kinnon 14/1
26 Aug 07+7d Yarmouth EDP Shop Local Campaign Handicap Class 6 · 1m6f · Good · 12 ran 5/12 shd 9-11 6261C Jerry O'Dwyer 16/1
19 Aug 07+23d Pontefract Frontline Complete Bathroom Handicap Class 5 · 2m1f · Good To Soft · 10 ran 6/10 1 9-3 6250C James O'Reilly 33/1
27 Jul 07+211d Chepstow toteplacepot Amateur Riders' Handicap Class 6 · 1m4f · Heavy · 15 ran 15/15 30 11-7 6558C Mrs S Moore 28/1
2006 · 7 runs
28 Dec 06+35d Catterick Goodbye 2006 - Hello 2007 Maiden Hurdle (Div 2) Class 4 · 1m7½f · Good To Soft · 16 ran 7/16 10 10-5 —73C Tjade Collier 25/1
23 Nov 06+62d Uttoxeter Betfair Mobile Novices' Hurdle Class 4 · 2m · Heavy · 12 ran 6/12 nk 10-12 —82C Graham Lee 33/1
22 Sep 06+97d Haydock Racing UK For 15 Per Month Handicap Class 5 · 1m4f · Good · 16 ran 12/16 2½ 9-12 7048C Robbie Fitzpatrick 25/1
17 Jun 06+3d York Queen Mother's Cup (Lady Amateur Riders) Handicap Class 3 · 1m4f · Good To Firm · 11 ran 11/11 8 9-12 8056C Mrs Emma Littmoden 33/1
14 Jun 06+26d Hamilton Field And Lawn Marquees Handicap Class 4 · 1m4f · Good To Firm · 6 ran 5/6 10 9-7 8042C J F Egan 8/1
19 May 06+9d Nottingham John Smith's Extra Smooth Maiden Stakes Class 5 · 1m6f · Soft · 9 ran 5/9 1¼ 9-12 8072C Eddie Ahern 11/4J
10 May 06+283d Chester Breitling Watches & Waltons Of Chester Handicap Class 2 · 1m2½f · Good To Firm · 14 ran 12/14 2½ 8-4 8551C J F Egan 16/1
2005 · 1 run
31 Jul 05 Deauville (FR) Prix de Pont Audemer 1m4½f · Good To Soft · 4 ran 2/4 ¾ 8-10 —— Christophe Soumillon 7/2

Quick answers

How many races has Magnum Opus won?
Magnum Opus (IRE) has yet to win, from 16 archived starts between 2005 and 2007.
Who trained Magnum Opus?
Magnum Opus (IRE) was trained by D J Murphy on the most recent run on record, at Redcar on 19 October 2007.
Who is Magnum Opus's sire?
Magnum Opus (IRE) is by Sadler's Wells (USA) out of Summer Breeze (GB), whose sire is Rainbow Quest.
What is Magnum Opus's official rating?
The most recent official rating on record is 52, from the run on 19 October 2007. The highest on record is 85.
What is Magnum Opus's sire's record?
Sadler's Wells (USA)'s progeny in our archive have won 11.3% of 4,636 runs since Jan 2008 (370 horses), Flat and jumps together. Strongest over 6f – 7f (all codes): 18.7% from 107.
Who are Magnum Opus's siblings?
Out of Summer Breeze (GB), Magnum Opus (IRE) has 5 other produce in our archive, 3 of them winners. Most wins: Doctor Fremantle (GB) (5). Highest grade won: Group 2 (Doctor Fremantle (GB)). The wins came over 1m–1m4½f. As at Nov 2026.

Record shown from July 2005. 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.