How many races has Calculation (GB) won?

Calculation (GB) won 3 of 13 archived starts between 2018 and 2020, a strike rate of 23.1%. Placed 4 times in total (30.8% of starts).

Who trained Calculation (GB)?

Calculation (GB) was trained by Sir Michael Stoute on the most recent run on record, at Doncaster on 23 October 2020.

Who is Calculation (GB)'s sire?

Calculation (GB) is by Dubawi (IRE) out of Estimate (IRE), whose sire is Monsun.

What going does Calculation (GB) prefer?

Calculation (GB) has the best record on good going: 1 win from 7 starts (14.3%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.

What is Calculation (GB)'s official rating?

The most recent official rating on record is 91, from the run on 23 October 2020. The highest on record is 93.

What is Calculation (GB)'s sire's record?

Dubawi (IRE)'s progeny in our archive have won 18.4% of 12,936 runs since Jan 2008 (1,520 horses), Flat and jumps together. Weakest at trips under 6f (all codes): 9.8% from 429.

Who are Calculation (GB)'s siblings?

Out of Estimate (IRE), Calculation (GB) has 4 other produce in our archive, 3 of them winners. Most wins: Evaluation (GB) (7). Highest grade won: Class 3 (Reaching High (IRE)). The wins came over 1m2f–2m2f. As at Oct 2026.

Horse profile

Calculation (GB)

4yo gelding (at last run, Oct 2020) · Last trainer Sir Michael Stoute · Last owner The Queen

by Dubawi (IRE) out of Estimate (IRE) (Monsun)

13 runs · 9 courses · from Aug 2018

As at 21 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily

No run recorded since 23 Oct 2020 — 2,188 days ago. Our archive can't say whether the horse is still in training.

Last run Oct 2020 · 5th of 8 3 wins · Chelmsford City (AW), Haydock & Doncaster Last raced off OR 91

KTB Profile

Calculation (GB) is 3 from 13. Hasn't won since Aug 2019. All 3 wins have come over 1m5f – 2m.

Based on 13 archived runs · updated 21 Oct 2026

3–13Wins / Runs
23.1%Strike rate
4 (30.8%)Placed
−3.10£1 level staken=13 at SP
1.23Fair A/E n=13 · 1.07 incl. margin
93Highest OR
67dAvg between runs

Official rating91↓ 2lb off peak

91 69–93

KTB Speed and Rating

KTB Speed

Best recent Speed 102 the best of the last 3 graded (A or B) runs · Sandown, 23 Aug 2020

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 13 figures · best 118^C · median 92

Going	Runs	Best	Median	Since 21 Oct 2025
Good	7	110^A	91	—
Soft	2	118^C	105	—
Standard (AW)	2	102^C	99.5	—
Good to Soft	2	83^A	68.5	—

Distance	Runs	Best	Median	Since 21 Oct 2025
1m5f – 2m	8	118^C	97	—
1m2f – 1m4f	3	97^A	75	—
1m – 1m1f	2	93^A	73.5	—

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 13 figures from 13 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 80^A the best of the last 3 rated runs · Doncaster, 11 Sep 2020 Official rating 91 at the last run, 23 Oct 2020

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 13 figures · best 87^A · median 75

Going	Runs	Best	Median	Since 21 Oct 2025
Good	7	87^A	72	—
Soft	2	77^A	76	—
Standard (AW)	2	79^B	74.5	—
Good to Soft	2	82^B	78	—

Distance	Runs	Best	Median	Since 21 Oct 2025
1m5f – 2m	8	87^A	78	—
1m2f – 1m4f	3	70^A	61	—
1m – 1m1f	2	74^B	70	—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 13 figures from 13 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

Dubawi (IRE)

Progeny in our archive have won 18.4% of 12,936 runs since Jan 2008 (1,520 horses).

Weakest at trips under 6f (all codes): 9.8% from 429.

Going	Runs	Wins	SR	vs sire	This horse
Firm	48	11	22.9%	+4.5	—
Good to Firm	2,323	477	20.5%	+2.1	—
Good	3,166	563	17.8%	−0.6	1 from 7
Good to Soft	1,742	310	17.8%	−0.6	1 from 2
Soft	1,900	327	17.2%	−1.2	0 from 2
Heavy	589	102	17.3%	−1.1	—
Standard (AW)	3,166	585	18.5%	+0.1	1 from 2

Distance (all codes)	Runs	Wins	SR	vs sire	This horse
Under 6f	429	42	9.8%	−8.6	—
6f – 7f	3,117	580	18.6%	+0.2	—
1m – 1m1f	3,852	725	18.8%	+0.4	0 from 2
1m2f – 1m4f	3,831	769	20.1%	+1.7	0 from 3
1m5f – 2m	1,205	188	15.6%	−2.8	3 from 8
2m1f – 2m4f	332	48	14.5%	−3.9	—
2m5f – 3m	138	19	13.8%	−4.6	—
Over 3m	32	6	18.8%	+0.4	—

Flat and jumps together (all codes) · since Jan 2008 · as at 20 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam

Estimate (IRE) (Monsun)

4 siblings in the archive, 3 winners — best of them Evaluation (GB) (7 wins).

The wins came over 1m2f–2m2f; the highest grade won is Class 3 (Reaching High (IRE)).

Produce	Runs	Wins	Win trips	Best grade
Evaluation (GB)	38	7	1m6f–2m½f	Class 4
Reaching High (IRE)	13	2	1m6f–2m2f	Class 3
Market Value (IRE)	6	1	1m2f	Class 5
Approximate (GB)	5	0	—	—

Record by conditions

Going	Runs	Wins	SR	£1
Good	7	1	14%	−1.00
Soft	2	0	0%	−2.00
Standard (AW)	2	1	50%	−0.20
Good to Soft	2	1	50%	+0.10

Class	Runs	Wins	SR	£1
Class 2	5	0	0%	−5.00
Class 3	3	1	33%	−1.20
Class 5	3	0	0%	−3.00
Class 4	2	2	100%	+6.10

Course	Runs	Wins	SR	£1
Doncaster	3	1	33%	+3.00
Sandown	2	0	0%	−2.00
Haydock	2	1	50%	+0.10
Chester	1	0	0%	−1.00
Newmarket	1	0	0%	−1.00
Chelmsford City (AW)	1	1	100%	+0.80
Lingfield (AW)	1	0	0%	−1.00
Windsor	1	0	0%	−1.00
Goodwood	1	0	0%	−1.00

Distance	Runs	Wins	SR	£1
1m5f – 2m	8	3	38%	+1.90
1m2f – 1m4f	3	0	0%	−3.00
1m – 1m1f	2	0	0%	−2.00

Jockey	Runs	Wins	SR	£1
Ryan Moore	6	0	0%	−6.00
William Buick	2	0	0%	−2.00
James Doyle	1	0	0%	−1.00
Louis Steward	1	1	100%	+0.80
Richard Kingscote	1	1	100%	+1.10
Kerrin McEvoy	1	1	100%	+5.00
Andrea Atzeni	1	0	0%	−1.00

Headgear	Runs	Wins	SR	£1
Visor	9	3	33%	+0.90
None	4	0	0%	−4.00

Season	Runs	Wins	SR	£1
2020	5	0	0%	−5.00
2019	6	3	50%	+3.90
2018	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

Date	Course	Race	Pos	Btn	Wgt	OR	Spd	KTB	Jockey	SP
23 Oct 20+26d	Doncaster	vertem.co.uk Handicap Class 2 · 14.5f · Soft · 8 ran	5/8	1½	9-9	91	118^C	75^C	William Buick	14/1
27 Sep 20+16d	Chester	Horseradish Handicap Class 3 · 14.5f · Good · 12 ran	8/12	8	9-12	92	77^C	72^C	James Doyle	9/2
11 Sep 20+19d	Doncaster	bet365 Mallard Handicap Class 2 · 14.5f · Good · 8 ran	5/8	1	9-5	93	91^A	80^A	William Buick	8/1
23 Aug 20+78d	Sandown	Read Andrew Balding On Betway Insider Handicap Class 3 · 14f · Good · 12 ran	2/12	1¾	9-12	88	102^A	87^A	Ryan Moore	6/1
06 Jun 20+273d	Newmarket	Trade On The Betfair Exchange Handicap Class 2 · 12f · Good · 8 ran	8/8	9	8-9	91	60^C	55^C	Ryan Moore	11/2
07 Sep 19+14d	Haydock	Better Odds On The Betfair Exchange Handicap Class 2 · 14f · Soft · 12 ran	9/12	½	8-12	91	92^A	77^A	Ryan Moore	7/1
24 Aug 19+36d	Chelmsford City (AW)	Bet totequadpot At totesport.com Handicap Class 3 · 13.5f · Standard · 4 ran	1/4		8-13	84	102^C	79^B	Louis Steward	4/5F
19 Jul 19+21d	Haydock	Like Racingtv On Facebook Handicap Class 4 · 14f · Good To Soft · 6 ran	1/6		9-2	78	83^A	82^B	Richard Kingscote	11/10F
28 Jun 19+24d	Doncaster	Believe Money Group Handicap Class 4 · 14.5f · Good · 6 ran	1/6		8-7	69	110^A	76^B	Kerrin McEvoy	5/1
04 Jun 19+36d	Lingfield (AW)	Take The Reins Handicap Class 5 · 12f · Standard · 7 ran	4/7	¾	9-2	69	97^A	70^A	Ryan Moore	11/8F
29 Apr 19+237d	Windsor	Robusto House Maiden Stakes Class 5 · 10f · Good · 16 ran	9/16	3	8-11	—	75^C	61^A	Andrea Atzeni	10/1
04 Sep 18+26d	Goodwood	British EBF Peter Willett Maiden Stakes (Plus 10) Class 2 · 8f · Good · 10 ran	9/10	½	9-5	—	93^A	66^A	Ryan Moore	6/1
09 Aug 18	Sandown	Slug And Lettuce 2-4-1 Tanqueray Thursdays EBF Maiden Stakes Class 5 · 8f · Good To Soft · 5 ran	3/5	1¾	9-5	—	54^C	74^B	Ryan Moore	5/1

Quick answers

How many races has Calculation (GB) won?: Calculation (GB) won 3 of 13 archived starts between 2018 and 2020, a strike rate of 23.1%. Placed 4 times in total (30.8% of starts).
Who trained Calculation (GB)?: Calculation (GB) was trained by Sir Michael Stoute on the most recent run on record, at Doncaster on 23 October 2020.
Who is Calculation (GB)'s sire?: Calculation (GB) is by Dubawi (IRE) out of Estimate (IRE), whose sire is Monsun.
What going does Calculation (GB) prefer?: Calculation (GB) has the best record on good going: 1 win from 7 starts (14.3%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is Calculation (GB)'s official rating?: The most recent official rating on record is 91, from the run on 23 October 2020. The highest on record is 93.
What is Calculation (GB)'s sire's record?: Dubawi (IRE)'s progeny in our archive have won 18.4% of 12,936 runs since Jan 2008 (1,520 horses), Flat and jumps together. Weakest at trips under 6f (all codes): 9.8% from 429.
Who are Calculation (GB)'s siblings?: Out of Estimate (IRE), Calculation (GB) has 4 other produce in our archive, 3 of them winners. Most wins: Evaluation (GB) (7). Highest grade won: Class 3 (Reaching High (IRE)). The wins came over 1m2f–2m2f. As at Oct 2026.

KTB Speed and Rating

Pedigree intelligence

Record by conditions

▾Going

▾Class

▾Course

▾Distance

▾Jockey

▾Headgear

▾Season

Form

Quick answers