Horse profile
Number Theory (GB)
by Halling (USA) out of Numanthia (IRE) (Barathea)
24 runs · 13 courses · from Aug 2010
As at 28 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 24 Aug 2013 — 4,812 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 28 Oct 2026
- 4–24Wins / Runs
- 16.7%Strike rate
- 14 (58.3%)Placed
- +0.00£1 level staken=24 at SP
- 1.99Fair A/E n=23 · 1.61 incl. margin
- 108Highest OR
- 48dAvg between runs
A/E compares actual wins with what starting prices implied. "Fair" strips the bookmaker margin from the expectation, so favourites and longshots are judged on the same footing — figures near 1.00 mean the market priced this horse about right.
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
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.
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Firm | 72 | 8 | 11.1% | +0.1 | — |
| Good to Firm | 1,151 | 146 | 12.7% | +1.7 | 1 from 7 |
| Good | 1,606 | 179 | 11.1% | +0.1 | 0 from 5 |
| Good to Soft | 751 | 83 | 11.1% | +0.1 | 2 from 7 |
| Soft | 789 | 89 | 11.3% | +0.3 | 1 from 5 |
| Heavy | 256 | 28 | 10.9% | −0.1 | — |
| Standard (AW) | 1,470 | 136 | 9.3% | −1.7 | — |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 36 | 3 | 8.3% | −2.7 | — |
| 6f – 7f | 578 | 48 | 8.3% | −2.7 | 0 from 4 |
| 1m – 1m1f | 979 | 93 | 9.5% | −1.5 | 0 from 2 |
| 1m2f – 1m4f | 2,079 | 247 | 11.9% | +0.9 | 4 from 10 |
| 1m5f – 2m | 1,592 | 196 | 12.3% | +1.3 | 0 from 7 |
| 2m1f – 2m4f | 614 | 68 | 11.1% | +0.1 | 0 from 1 |
| 2m5f – 3m | 187 | 9 | 4.8% | −6.2 | — |
| Over 3m | 30 | 5 | 16.7% | +5.7 | — |
Flat and jumps together (all codes) · since Jan 2008 · as at 28 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)).
| Produce | Runs | Wins | Win trips | Best grade |
|---|---|---|---|---|
| Zahirah (GB) | 33 | 1 | 7f | Class 6 |
| Lomond Lassie (GB) | 9 | 0 | — | — |
| Mulled Wine (GB) | 11 | 0 | — | — |
| Rain In The Course (GB) | 2 | 0 | — | — |
| Hikkaduwa (GB) | 1 | 0 | — | — |
Record by conditions
| Going | Runs | Wins | SR | £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 |
| Class | Runs | Wins | SR | £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 |
| Course | Runs | Wins | SR | £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 |
| Distance | Runs | Wins | SR | £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 |
| Jockey | Runs | Wins | SR | £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 |
| Season | Runs | Wins | SR | £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
| Date | Course | Race | Pos | Btn | Wgt | OR | KTB | Jockey | SP |
|---|---|---|---|---|---|---|---|---|---|
| 2013 · 6 runs | |||||||||
| 24 Aug 13+23d | York | Betfred Ebor (Heritage Handicap) | 3/14 | 1 | 9-9 | 107 | 100A | Seb Sanders | 16/1 |
| 01 Aug 13+19d | Goodwood | Artemis Goodwood Cup (British Champions Series) (Group 2) | 4/14 | 1¼ | 9-7 | 107 | 91A | Franny Norton | 33/1 |
| 13 Jul 13+23d | York | John Smith's Silver Cup (Listed Handicap) | 3/8 | 1½ | 9-13 | 108 | 93A | Graham Gibbons | 16/1 |
| 20 Jun 13+21d | Ascot | Gold Cup (British Champions Series) (Group 1) | 9/14 | 1 | 9-2 | 108 | 83A | Seb Sanders | 50/1 |
| 30 May 13+19d | Sandown | Seymour Pierce Henry II Stakes (Group 3) | 2/10 | 4 | 9-2 | 98 | 92A | Seb Sanders | 40/1 |
| 11 May 13+239d | Ascot | Buckhounds Stakes (Listed) | 4/5 | 6 | 8-12 | 91 | 75C | Franny Norton | 16/1 |
| 2012 · 6 runs | |||||||||
| 14 Sep 12+20d | Doncaster | Ladbrokes Mallard Stakes (Handicap) | 7/12 | ½ | 10-0 | 99 | 89A | Russ Kennemore | 9/1 |
| 25 Aug 12+49d | York | Betfred Ebor (Heritage Handicap) | 3/19 | 1½ | 8-12 | 97 | 90A | Russ Kennemore | 16/1 |
| 07 Jul 12+24d | Haydock | bet365 Old Newton Cup (Heritage Handicap) | 1/15 | 8-5 | 91 | 95A | Russ Kennemore | 8/1 | |
| 13 Jun 12+20d | Haydock | Trust Inns Publicans Handicap | 1/10 | 9-0 | 86 | 95A | Russ Kennemore | 7/2F | |
| 24 May 12+26d | Haydock | Taylormade Betting Handicap | 1/13 | 8-12 | 76 | 95A | Russ Kennemore | 9/2F | |
| 28 Apr 12+201d | Haydock | Concourse Pharmacy 25th Anniversary Handicap | 3/11 | 1½ | 9-3 | 76 | 95A | Russ Kennemore | 7/1 |
| 2011 · 8 runs | |||||||||
| 10 Oct 11+42d | Salisbury | Bathwick Tyres 'Season Finale' Handicap | 6/14 | 2¾ | 8-8 | 77 | 67A | Matthew Lawson | 16/1 |
| 29 Aug 11+16d | Warwick | Stratford Handicap | 5/13 | 1¾ | 9-2 | 77 | 73A | Andrea Atzeni | 13/2 |
| 13 Aug 11+28d | Ripon | SIS Live Handicap | 2/9 | 1¼ | 9-7 | 75 | 91A | Paul Hanagan | 9/2 |
| 16 Jul 11+21d | Haydock | Hattons Supporting Saints Handicap | 1/8 | 8-8 | 71 | 71A | Lucy K Barry | 4/1 | |
| 25 Jun 11+16d | Chester | Trafford Centre A-List App Maiden Stakes | 2/6 | ½ | 8-8 | 69 | 75B | Lucy K Barry | 7/2 |
| 09 Jun 11+33d | Haydock | Racing Uk In Your Pub 0870 351 8834 Handicap | 2/9 | 11 | 9-7 | 70 | 69A | Nicky Mackay | 12/1 |
| 07 May 11+21d | Nottingham | Make Mine A Crabbie's Handicap | 4/5 | 6 | 9-1 | 71 | 60B | James Rogers | 3/1 |
| 16 Apr 11+186d | Haydock | Turftv.co.uk Handicap | 3/12 | ½ | 9-3 | 70 | 82A | Jimmy Quinn | 40/1 |
| 2010 · 4 runs | |||||||||
| 12 Oct 10+27d | Leicester | E.B.F. Reference Point Maiden Stakes (Div 2) | 5/8 | 3¼ | 9-0 | 72 | 71A | Nicky Mackay | 8/1 |
| 15 Sep 10+15d | Beverley | Irish Thoroughbred Marketing Maiden Auction Stakes | 5/13 | 2¼ | 8-11 | — | 73A | Graham Gibbons | 11/2 |
| 31 Aug 10+23d | Leicester | Ladbrokes.com E.b.f. Apollo Maiden Stakes | 3/15 | ½ | 9-3 | — | 85A | Nicky Mackay | 50/1 |
| 08 Aug 10 | Leicester | E.b.f. Bagworth Maiden Stakes | 7/10 | ¾ | 9-3 | — | 63A | Jerry O'Dwyer | 100/1 |
Quick answers
- How many races has Number Theory 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?
- 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's sire?
- Number Theory (GB) is by Halling (USA) out of Numanthia (IRE), whose sire is Barathea.
- What going does Number Theory 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'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'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'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.