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Horse profile

Assertion (GB)

2yo colt (at last run, Oct 2010) · Last trainer Mel Brittain · Last owner Dick Snook Britton Hitchenor
by Proclamation (IRE) out of Cantina (GB) (Tina's Pet)
4 runs · 3 courses · from Jun 2010
As at 27 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 6 Oct 2010 — 5,865 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2010 · 17th of 17 Last raced off OR 57
KTB Profile

Assertion (GB) is yet to win from 4 starts. Last raced off 57, 45lb below the career-high mark.

Based on 4 archived runs · updated 27 Oct 2026

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 62A the best of the last 3 rated runs · York, 24 Jul 2010 Official rating 57 at the last run, 6 Oct 2010

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 4 figures · best 62A · median 39
GoingRunsBestMedianSince 27 Oct 2025
Good to Firm262A49—
Soft1———
Good1———
DistanceRunsBestMedianSince 27 Oct 2025
6f – 7f262A49.5—
Under 6f241C38.5—

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

Progeny in our archive have won 8.2% of 1,895 runs since Jan 2008 (165 horses).

Strongest at trips under 6f (all codes): 11.9% from 227. Weakest over 1m – 1m1f (all codes): 5% from 278.

GoingRunsWinsSRvs sireThis horse
Firm18316.7%+8.5—
Good to Firm282238.2%00 from 2
Good429337.7%−0.50 from 1
Good to Soft274207.3%−0.9—
Soft237229.3%+1.10 from 1
Heavy841011.9%+3.7—
Standard (AW)571447.7%−0.5—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f2272711.9%+3.70 from 2
6f – 7f523387.3%−0.90 from 2
1m – 1m1f278145%−3.2—
1m2f – 1m4f2602911.2%+3—
1m5f – 2m349277.7%−0.5—
2m1f – 2m4f194126.2%−2—
2m5f – 3m57814%+5.8—
Over 3m700%−8.2—

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
Cantina (GB) (Tina's Pet)

2 siblings in the archive, 2 winners — best of them Miss Lovat (GB) (1 win).

The wins came over 5f; the highest grade won is Class 5 (Miss Lovat (GB)).

ProduceRunsWinsWin tripsBest grade
Miss Lovat (GB)2315fClass 5
Tell Me A Story (GB)715fClass 5

Record by conditions

GoingRunsWinsSR£1
Good to Firm 2 0 0% −2.00
Soft 1 0 0% −1.00
Good 1 0 0% −1.00

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

CourseRunsWinsSR£1
York 2 0 0% −2.00
Nottingham 1 0 0% −1.00
Beverley 1 0 0% −1.00

DistanceRunsWinsSR£1
6f – 7f 2 0 0% −2.00
Under 6f 2 0 0% −2.00

JockeyRunsWinsSR£1
Alan Munro 2 0 0% −2.00
David Allan 1 0 0% −1.00
Robert Winston 1 0 0% −1.00

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
2010 · 4 runs
06 Oct 10+56d Nottingham Red Box Recorders Simply, Smarter, Voice Nursery (Div 2) Class 6 · 6f · Soft · 17 ran 17/17 ¾ 9-4 5737C David Allan 25/1
11 Aug 10+18d Beverley Hull Daily Mail Maiden Auction Stakes Class 5 · 5f · Good To Firm · 16 ran 16/16 1¼ 9-1 5736C Robert Winston 50/1
24 Jul 10+43d York Skyvegas.com Median Auction Maiden Stakes Class 4 · 6f · Good To Firm · 8 ran 5/8 5 9-3 10262A Alan Munro 50/1
11 Jun 10 York Win A Million Pounds With sportingbet.com E.B.F. Maiden Stakes Class 3 · 5f · Good · 10 ran 10/10 nk 9-3 —41C Alan Munro 66/1

Quick answers

How many races has Assertion won?
Assertion (GB) has yet to win, from 4 archived starts in 2010.
Who trained Assertion?
Assertion (GB) was trained by Mel Brittain on the most recent run on record, at Nottingham on 6 October 2010.
Who is Assertion's sire?
Assertion (GB) is by Proclamation (IRE) out of Cantina (GB), whose sire is Tina's Pet.
What is Assertion's official rating?
The most recent official rating on record is 57, from the run on 6 October 2010. The highest on record is 102.
What is Assertion's sire's record?
Proclamation (IRE)'s progeny in our archive have won 8.2% of 1,895 runs since Jan 2008 (165 horses), Flat and jumps together. Strongest at trips under 6f (all codes): 11.9% from 227. Weakest over 1m – 1m1f (all codes): 5% from 278.
Who are Assertion's siblings?
Out of Cantina (GB), Assertion (GB) has 2 other produce in our archive, 2 of them winners. Most wins: Miss Lovat (GB) (1). Highest grade won: Class 5 (Miss Lovat (GB)). The wins came over 5f. As at Oct 2026.

Record shown from June 2010. 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.