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Horse profile

Number Theory (GB)

5yo gelding (at last run, Aug 2013) · Last trainer John Holt · Last owner Mohan Fonseka
by Halling (USA) out of Numanthia (IRE) (Barathea)
24 runs · 13 courses · from Aug 2010
As at 21 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 24 Aug 2013 — 4,806 days ago. Our archive can't say whether the horse is still in training.
Last run Aug 2013 · 3rd of 14 4 wins · Haydock Last raced off OR 107
KTB Profile

Number Theory (GB) is 4 from 24. Hasn't won since Jul 2012. 4 of 7 starts at Haydock have ended in wins. All 4 wins have come over 1m2f – 1m4f.

Based on 24 archived runs · updated 21 Oct 2026
Official rating107↓ 1lb off peak
107 69–108

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 100A the best of the last 3 rated runs · York, 24 Aug 2013 Official rating 107 at the last run, 24 Aug 2013

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 24 figures · best 100A · median 84
GoingRunsBestMedianSince 21 Oct 2025
Good to Firm795A82—
Good to Soft795A90—
Soft5100A95—
Good591A73—
DistanceRunsBestMedianSince 21 Oct 2025
1m2f – 1m4f1095A83—
1m5f – 2m7100A91—
6f – 7f485A72—
1m – 1m1f282A71—
2m1f – 2m4f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 24 figures from 24 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
Halling (USA)

Progeny in our archive have won 11% of 6,095 runs since Jan 2008 (409 horses).

Weakest over 2m5f – 3m (all codes): 4.8% from 187.

GoingRunsWinsSRvs sireThis horse
Firm72811.1%+0.1—
Good to Firm1,15114612.7%+1.71 from 7
Good1,60617911.1%+0.10 from 5
Good to Soft7518311.1%+0.12 from 7
Soft7898911.3%+0.31 from 5
Heavy2562810.9%−0.1—
Standard (AW)1,4701369.3%−1.7—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f3638.3%−2.7—
6f – 7f578488.3%−2.70 from 4
1m – 1m1f979939.5%−1.50 from 2
1m2f – 1m4f2,07924711.9%+0.94 from 10
1m5f – 2m1,59219612.3%+1.30 from 7
2m1f – 2m4f6146811.1%+0.10 from 1
2m5f – 3m18794.8%−6.2—
Over 3m30516.7%+5.7—

Flat and jumps together (all codes) · since Jan 2008 · as at 21 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Numanthia (IRE) (Barathea)

5 siblings in the archive, 1 winner — best of them Zahirah (GB) (1 win).

The wins came over 7f; the highest grade won is Class 6 (Zahirah (GB)).

ProduceRunsWinsWin tripsBest grade
Zahirah (GB)3317fClass 6
Lomond Lassie (GB)90——
Mulled Wine (GB)110——
Rain In The Course (GB)20——
Hikkaduwa (GB)10——

Record by conditions

GoingRunsWinsSR£1
Good to Firm 7 1 14% −1.50
Good to Soft 7 2 29% +2.50
Soft 5 1 20% +4.00
Good 5 0 0% −5.00

ClassRunsWinsSR£1
Class 4 8 1 13% −2.50
Class 5 6 1 17% −1.00
Class 1 5 0 0% −5.00
Class 2 4 1 25% +5.00
Class 3 1 1 100% +3.50

CourseRunsWinsSR£1
Haydock 7 4 57% +17.00
York 3 0 0% −3.00
Leicester 3 0 0% −3.00
Ascot 2 0 0% −2.00
Goodwood 1 0 0% −1.00
Sandown 1 0 0% −1.00
Doncaster 1 0 0% −1.00
Salisbury 1 0 0% −1.00
Warwick 1 0 0% −1.00
Ripon 1 0 0% −1.00
Chester 1 0 0% −1.00
Nottingham 1 0 0% −1.00
Beverley 1 0 0% −1.00

DistanceRunsWinsSR£1
1m2f – 1m4f 10 4 40% +14.00
1m5f – 2m 7 0 0% −7.00
6f – 7f 4 0 0% −4.00
1m – 1m1f 2 0 0% −2.00
2m1f – 2m4f 1 0 0% −1.00

JockeyRunsWinsSR£1
Russ Kennemore 6 3 50% +13.00
Seb Sanders 3 0 0% −3.00
Nicky Mackay 3 0 0% −3.00
Franny Norton 2 0 0% −2.00
Graham Gibbons 2 0 0% −2.00
Lucy K Barry 2 1 50% +3.00
Matthew Lawson 1 0 0% −1.00
Andrea Atzeni 1 0 0% −1.00
Paul Hanagan 1 0 0% −1.00
James Rogers 1 0 0% −1.00
Jimmy Quinn 1 0 0% −1.00
Jerry O'Dwyer 1 0 0% −1.00

SeasonRunsWinsSR£1
2013 6 0 0% −6.00
2012 6 3 50% +13.00
2011 8 1 13% −3.00
2010 4 0 0% −4.00

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
24 Aug 13+23d York Betfred Ebor (Heritage Handicap) Class 2 · 14f · Soft · 14 ran 3/14 1 9-9 107100A Seb Sanders 16/1
01 Aug 13+19d Goodwood Artemis Goodwood Cup (British Champions Series) (Group 2) Class 1 · 16f · Good · 14 ran 4/14 1¼ 9-7 10791A Franny Norton 33/1
13 Jul 13+23d York John Smith's Silver Cup (Listed Handicap) Class 1 · 14f · Good To Firm · 8 ran 3/8 1½ 9-13 10893A Graham Gibbons 16/1
20 Jun 13+21d Ascot Gold Cup (British Champions Series) (Group 1) Class 1 · 20f · Good To Firm · 14 ran 9/14 1 9-2 10883A Seb Sanders 50/1
30 May 13+19d Sandown Seymour Pierce Henry II Stakes (Group 3) Class 1 · 16f · Good To Soft · 10 ran 2/10 4 9-2 9892A Seb Sanders 40/1
11 May 13+239d Ascot Buckhounds Stakes (Listed) Class 1 · 12f · Good To Firm · 5 ran 4/5 6 8-12 9175C Franny Norton 16/1
14 Sep 12+20d Doncaster Ladbrokes Mallard Stakes (Handicap) Class 2 · 14.5f · Good · 12 ran 7/12 ½ 10-0 9989A Russ Kennemore 9/1
25 Aug 12+49d York Betfred Ebor (Heritage Handicap) Class 2 · 14f · Good To Soft · 19 ran 3/19 1½ 8-12 9790A Russ Kennemore 16/1
07 Jul 12+24d Haydock bet365 Old Newton Cup (Heritage Handicap) Class 2 · 12f · Soft · 15 ran 1/15 8-5 9195A Russ Kennemore 8/1
13 Jun 12+20d Haydock Trust Inns Publicans Handicap Class 3 · 12f · Good To Soft · 10 ran 1/10 9-0 8695A Russ Kennemore 7/2F
24 May 12+26d Haydock Taylormade Betting Handicap Class 4 · 12f · Good To Firm · 13 ran 1/13 8-12 7695A Russ Kennemore 9/2F
28 Apr 12+201d Haydock Concourse Pharmacy 25th Anniversary Handicap Class 4 · 10.5f · Soft · 11 ran 3/11 1½ 9-3 7695A Russ Kennemore 7/1
10 Oct 11+42d Salisbury Bathwick Tyres 'Season Finale' Handicap Class 4 · 14f · Good · 14 ran 6/14 2¾ 8-8 7767A Matthew Lawson 16/1
29 Aug 11+16d Warwick Stratford Handicap Class 4 · 11f · Good · 13 ran 5/13 1¾ 9-2 7773A Andrea Atzeni 13/2
13 Aug 11+28d Ripon SIS Live Handicap Class 5 · 12f · Good To Soft · 9 ran 2/9 1¼ 9-7 7591A Paul Hanagan 9/2
16 Jul 11+21d Haydock Hattons Supporting Saints Handicap Class 5 · 10.5f · Good To Soft · 8 ran 1/8 8-8 7171A Lucy K Barry 4/1
25 Jun 11+16d Chester Trafford Centre A-List App Maiden Stakes Class 4 · 10.5f · Soft · 6 ran 2/6 ½ 8-8 6975B Lucy K Barry 7/2
09 Jun 11+33d Haydock Racing Uk In Your Pub 0870 351 8834 Handicap Class 5 · 10.5f · Good To Soft · 9 ran 2/9 11 9-7 7069A Nicky Mackay 12/1
07 May 11+21d Nottingham Make Mine A Crabbie's Handicap Class 5 · 8.5f · Good To Firm · 5 ran 4/5 6 9-1 7160B James Rogers 3/1
16 Apr 11+186d Haydock Turftv.co.uk Handicap Class 5 · 8f · Good To Firm · 12 ran 3/12 ½ 9-3 7082A Jimmy Quinn 40/1
12 Oct 10+27d Leicester E.B.F. Reference Point Maiden Stakes (Div 2) Class 4 · 7f · Good To Soft · 8 ran 5/8 3¼ 9-0 7271A Nicky Mackay 8/1
15 Sep 10+15d Beverley Irish Thoroughbred Marketing Maiden Auction Stakes Class 5 · 7.5f · Good · 13 ran 5/13 2¼ 8-11 —73A Graham Gibbons 11/2
31 Aug 10+23d Leicester Ladbrokes.com E.b.f. Apollo Maiden Stakes Class 4 · 7f · Soft · 15 ran 3/15 ½ 9-3 —85A Nicky Mackay 50/1
08 Aug 10 Leicester E.b.f. Bagworth Maiden Stakes Class 4 · 7f · Good To Firm · 10 ran 7/10 ¾ 9-3 —63A Jerry O'Dwyer 100/1

Quick answers

How many races has Number Theory (GB) won?
Number Theory (GB) won 4 of 24 archived starts between 2010 and 2013, a strike rate of 16.7%. Placed 14 times in total (58.3% of starts).
Who trained Number Theory (GB)?
Number Theory (GB) was trained by John Holt on the most recent run on record, at York on 24 August 2013.
Who is Number Theory (GB)'s sire?
Number Theory (GB) is by Halling (USA) out of Numanthia (IRE), whose sire is Barathea.
What going does Number Theory (GB) prefer?
Number Theory (GB) has the best record on good to soft going: 2 wins from 7 starts (28.6%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is Number Theory (GB)'s official rating?
The most recent official rating on record is 107, from the run on 24 August 2013. The highest on record is 108.
What is Number Theory (GB)'s sire's record?
Halling (USA)'s progeny in our archive have won 11% of 6,095 runs since Jan 2008 (409 horses), Flat and jumps together. Weakest over 2m5f – 3m (all codes): 4.8% from 187.
Who are Number Theory (GB)'s siblings?
Out of Numanthia (IRE), Number Theory (GB) has 5 other produce in our archive, 1 of them a winner. Most wins: Zahirah (GB) (1). Highest grade won: Class 6 (Zahirah (GB)). The wins came over 7f. As at Oct 2026.

Record shown from August 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.