Circuit Breaker (GB)
Circuit Breaker (GB) is yet to win from 4 starts. Best effort: 4th of 8 at Killarney (Aug 2016).
- 0–4Wins / Runs
- 0%Strike rate
- 0 (0%)Placed
- −4.00£1 level staken=4 at SP
- 51Highest OR
- 29dBetween runs (median)
KTB Speed and Rating
Best recent Speed 82
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 →
| Going | Runs | Best | Median | Since 4 Nov 2025 |
|---|---|---|---|---|
| Standard (AW) | 1 | — | — | — |
| Soft | 1 | — | — | — |
| Heavy | 1 | — | — | — |
| Distance | Runs | Best | Median | Since 4 Nov 2025 |
|---|---|---|---|---|
| 1m – 1m1f | 2 | 33C | 24 | — |
| 6f – 7f | 1 | — | — | — |
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 3 figures from 3 runs · as at 3 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
Progeny in our archive have won 10% of 19,709 runs since Jan 2008 (1,327 horses).
Strongest on firm going: 15.2% from 151. Weakest over 2m1f – 2m4f (all codes): 6.7% from 195.
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Firm | 151 | 23 | 15.2% | +5.2 | — |
| Good to Firm | 3,917 | 446 | 11.4% | +1.4 | 0 from 1 |
| Good | 4,410 | 400 | 9.1% | −0.9 | — |
| Good to Soft | 1,952 | 214 | 11% | +1 | — |
| Soft | 2,134 | 184 | 8.6% | −1.4 | 0 from 1 |
| Heavy | 563 | 46 | 8.2% | −1.8 | 0 from 1 |
| Standard (AW) | 6,581 | 663 | 10.1% | +0.1 | 0 from 1 |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 3,759 | 409 | 10.9% | +0.9 | — |
| 6f – 7f | 10,509 | 1,078 | 10.3% | +0.3 | 0 from 1 |
| 1m – 1m1f | 3,511 | 331 | 9.4% | −0.6 | 0 from 3 |
| 1m2f – 1m4f | 1,211 | 106 | 8.8% | −1.2 | — |
| 1m5f – 2m | 482 | 37 | 7.7% | −2.3 | — |
| 2m1f – 2m4f | 195 | 13 | 6.7% | −3.3 | — |
| 2m5f – 3m | 42 | 2 | 4.8% | −5.2 | — |
Flat and jumps together (all codes) · since Jan 2008 · as at 4 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
4 siblings in the archive, 2 winners — best of them Nortron (IRE) (1 win).
The wins came over 6f; the highest grade won is Class 5 (Nortron (IRE)).
| Produce | Runs | Wins | Win trips | Best grade |
|---|---|---|---|---|
| Nortron (IRE) | 12 | 1 | 6f | Class 5 |
| La Undecima (FR) | 7 | 1 | 6f | — |
| Ave Cesare (GB) | 3 | 0 | — | — |
| Sweet Malpic (FR) | 1 | 0 | — | — |
Record by conditions
| Going | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Standard (AW) | 1 | 0 | 0% | −1.00 |
| Soft | 1 | 0 | 0% | −1.00 |
| Heavy | 1 | 0 | 0% | −1.00 |
| Good to Firm | 1 | 0 | 0% | −1.00 |
| Course | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Dundalk (AW) | 1 | 0 | 0% | −1.00 |
| Limerick | 1 | 0 | 0% | −1.00 |
| Listowel | 1 | 0 | 0% | −1.00 |
| Killarney | 1 | 0 | 0% | −1.00 |
| Distance | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| 1m – 1m1f | 3 | 0 | 0% | −3.00 |
| 6f – 7f | 1 | 0 | 0% | −1.00 |
| Jockey | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Gary Carroll | 3 | 0 | 0% | −3.00 |
| W J Lee | 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
| Date | Course | Race | Pos | Btn | Wgt | OR | Spd | KTB | Jockey | SP |
|---|---|---|---|---|---|---|---|---|---|---|
| 2016 · 4 runs | ||||||||||
| 11 Nov 16+39d | Dundalk (AW) | Crowne Plaza Hotel Race & Stay Handicap (45-65) (Div 1) | 8/14 | 3 | 8-13 | 51 | 82B | 53A | Gary Carroll | 25/1 |
| 03 Oct 16+18d | Limerick | Patrickswell Maiden | 13/15 | 1¾ | 9-5 | — | 33C | 53C | Gary Carroll | 66/1 |
| 15 Sep 16+29d | Listowel | Tote Maiden | 7/8 | 8 | 9-5 | — | 15C | 42C | W J Lee | 9/1 |
| 17 Aug 16 | Killarney | Mosscontrol.ie Maiden | 4/8 | 9 | 9-5 | — | — | 53A | Gary Carroll | 12/1 |
Quick answers
- How many races has Circuit Breaker won?
- Circuit Breaker (GB) has yet to win, from 4 archived starts in 2016.
- Who trained Circuit Breaker?
- Circuit Breaker (GB) was trained by Augustine Leahy on the most recent run on record, at Dundalk (AW) on 11 November 2016.
- Who is Circuit Breaker's sire?
- Circuit Breaker (GB) is by Acclamation (GB) out of Nessa (FR), whose sire is Marchand De Sable.
- What is Circuit Breaker's official rating?
- The most recent official rating on record is 51, from the run on 11 November 2016. That is also the highest on record.
- What is Circuit Breaker's sire's record?
- Acclamation (GB)'s progeny in our archive have won 10% of 19,709 runs since Jan 2008 (1,327 horses), Flat and jumps together. Strongest on firm going: 15.2% from 151. Weakest over 2m1f – 2m4f (all codes): 6.7% from 195.
- Who are Circuit Breaker's siblings?
- Out of Nessa (FR), Circuit Breaker (GB) has 4 other produce in our archive, 2 of them winners. Most wins: Nortron (IRE) (1). Highest grade won: Class 5 (Nortron (IRE)). The wins came over 6f. As at Nov 2026.