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Horse profile

Muddy Marvellous (GB)

6yo gelding · Trainer Seb Spencer · Owner P Burrow N Bycroft
by Koropick (IRE) out of Misu Mac (GB) (Misu Bond)
7 runs · 2 courses · from Oct 2023
As at 5 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
Last run 19 Sep 2026 · 8th of 11 Last raced off OR 47
KTB Profile

Muddy Marvellous is a maiden who has been unplaced in all seven starts on the all-weather. He has raced exclusively on standard going, with five runs at Newcastle and two at Southwell. His best effort came when fourth of four at Newcastle in Nov 2023. He finished eighth of 11 in a Class 6 handicap at Newcastle in Sep 2026.

Based on 7 archived runs · run-style from 4 commented runs since Oct 2025 · updated 5 Nov 2026

KTB Speed and Rating

KTB Speed

Best recent Speed 85 the best of the last 3 graded (A or B) runs · Newcastle (AW), 19 Sep 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 →

Flat 7 figures · best 85A · median 48
GoingRunsBestMedianSince 5 Nov 2025
Standard (AW)785A483 runs · 85 / 82
DistanceRunsBestMedianSince 5 Nov 2025
1m – 1m1f382B611 run · —
6f – 7f348A471 run · —
1m2f – 1m4f1——1 run · —

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 7 figures from 7 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 58A the best of the last 3 rated runs · Newcastle (AW), 2 Dec 2025 Official rating 47 at the last run, 19 Sep 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 →

Flat 7 figures · best 58A · median 47
GoingRunsBestMedianSince 5 Nov 2025
Standard (AW)758A473 runs · 58 / 52
DistanceRunsBestMedianSince 5 Nov 2025
1m – 1m1f352A491 run · —
6f – 7f358A361 run · —
1m2f – 1m4f1——1 run · —

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 7 figures from 7 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 4 analysed runs since Oct 2025

  • Held up 3 (75%) · 0 wins
  • Prominent 1 (25%) · 0 wins

Pedigree intelligence

Sire
Koropick (IRE)

Progeny in our archive have won 4.5% of 111 runs since May 2022 (7 horses).

GoingRunsWinsSRvs sireThis horse
Good to Firm8112.5%+8—
Good2015%+0.5—
Good to Soft900%−4.5—
Soft1000%−4.5—
Heavy600%−4.5—
Standard (AW)5835.2%+0.70 from 7
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f200%−4.5—
6f – 7f6035%+0.50 from 3
1m – 1m1f1800%−4.50 from 3
1m2f – 1m4f500%−4.50 from 1
1m5f – 2m10110%+5.5—
2m1f – 2m4f1317.7%+3.2—
2m5f – 3m300%−4.5—

Flat and jumps together (all codes) · since May 2022 · as at 4 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Misu Mac (GB) (Misu Bond)

1 sibling in the archive, 0 winners.

ProduceRunsWinsWin tripsBest grade
Supp Up (GB)10——

Record by conditions

ClassRunsWinsSR£1
Class 5 4 0 0% −4.00
Class 6 3 0 0% −3.00

CourseRunsWinsSR£1
Newcastle (AW) 5 0 0% −5.00
Southwell (AW) 2 0 0% −2.00

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

JockeyRunsWinsSR£1
Dale Swift 4 0 0% −4.00
Shay Farmer 1 0 0% −1.00
Alex Jary 1 0 0% −1.00
Ben Robinson 1 0 0% −1.00

HeadgearRunsWinsSR£1
None 6 0 0% −6.00
Cheekpieces 1 0 0% −1.00

SeasonRunsWinsSR£1
2026 2 0 0% −2.00
2025 2 0 0% −2.00
2023 3 0 0% −3.00

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 · 2 runs
19 Sep 26+34d Newcastle (AW) Quinnbet.com Handicap Stakes Class 6 · 1m2f · Standard · 11 ran Held up at the back - niggled at from 3f out - found little under pressure and faded to finish 8th 8/11 1½ 8-10 4785A47A Shay Farmer 50/1
16 Aug 26+257d Southwell (AW) Fraser Plus Designer Outlet East Midlands Handicap Stakes Class 6 · 1m · Standard · 13 ran Held up towards back of pack - driven up 3f out - unable to challenge - finished eighth 8/13 1¼ 9-3 4982B52A Dale Swift 125/1
2025 · 2 runs
02 Dec 25+39d Newcastle (AW) Win 250,000 With BetMGM's Golden Goals Novice Stakes (GBB Race) Class 5 · 7f · Standard · 8 ran Slow to begin and drifted right early - held up towards the back - shaped up over 2f out - contested fourth in the last furlong before edging back to finish fifth 5/8 shd 9-7 3848A58A Dale Swift 200/1
24 Oct 25+710d Southwell (AW) Bet 10 Get 40 With BetMGM Handicap (Div 1) Class 6 · 1m · Standard · 11 ran Sat close to front group early - urged forward 3f out - dropped away rapidly with 2f left - eventually finished tenth 10/11 7½ 8-13 4561C30C Alex Jary 150/1
2023 · 3 runs
14 Nov 23+7d Newcastle (AW) Set Deposit Limits At BetUK Novice Stakes (GBB Race) Class 5 · 6f · Standard · 8 ran 8/8 14 9-7 —15C36C Ben Robinson 250/1
07 Nov 23+7d Newcastle (AW) BetMGM: It's Showtime Novice Stakes (GBB Race) Class 5 · 7f · Standard · 4 ran 4/4 13 9-7 —47C36C Dale Swift 150/1
31 Oct 23 Newcastle (AW) Stay Golden With BetMGM Safer Gambling Novice Stakes (GBB Race) Class 5 · 1m · Standard · 9 ran 9/9 10 9-4 —33C49C Dale Swift 200/1

Quick answers

How many races has Muddy Marvellous won?
Muddy Marvellous (GB) has yet to win, from 7 archived starts between 2023 and 2026.
Who trains Muddy Marvellous?
Muddy Marvellous (GB) is trained by Seb Spencer, who saddled the horse on its most recent run on 19 September 2026.
Who is Muddy Marvellous's sire?
Muddy Marvellous (GB) is by Koropick (IRE) out of Misu Mac (GB), whose sire is Misu Bond.
What is Muddy Marvellous's official rating?
The most recent official rating on record is 47, from the run on 19 September 2026. The highest on record is 49.
What is Muddy Marvellous's sire's record?
Koropick (IRE)'s progeny in our archive have won 4.5% of 111 runs since May 2022 (7 horses), Flat and jumps together.
Who are Muddy Marvellous's siblings?
Out of Misu Mac (GB), Muddy Marvellous (GB) has 1 other produce in our archive, 0 of them winners. As at Nov 2026.

Record shown from October 2023. 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.