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Circuit Breaker

Circuit Breaker is a horse caught between promise and inconsistency, a 6-year-old with real potential on the right day but frustratingly unreliable. His record reads modestly — three wins from 25 races, a 12 per cent win rate — but the story behind those numbers is more interesting than the bare statistics suggest. He is a course specialist at Kempton Park, where he has won two of his three races, and those victories hint at a horse that thrives when conditions align. His last win came on the all-weather track at Kempton in October 2024, in a modest four-runner race, but the trainer noted afterwards that Circuit Breaker jumped well and was expected to improve. He is an out-and-out stayer, the kind of horse built for grinding races over distance, and has shown his best form in Class 4 races, winning at a 22 per cent rate (2 wins from 9) when pitched at that level.Based on TrackLab's analysis
Quick facts
Age
6 years old
Sex
Gelding
Colour
Bay
Father
Nathaniel
Mother
Australian Queen
Trainer
Jonjo & A.J. O'Neill
Owner
Tanzanite
Official rating
68

📊 Key numbers

Career totals for this horse
25
Career races
3
Wins
12%
Win rate
avg ~10%
48%
Top-3 rate
avg ~30%
24 days
Since last race

🔍 Full analysis

Our model's view, based on this horse's career and recent runs
TrackLab's detailed breakdown

What holds him back is consistency. His form over his last six races reads 3-4-4-6-3-6 — a middling sequence with placings but no wins, suggesting he is competitive but not winning races. He has not scored in his last six outings despite being active just yesterday, which indicates either a loss of form or that the right race simply has not come along. Notably, jockey Cieren Fallon, his most regular partner, has yet to register a win aboard him in five attempts together. The trainer, based at Cheltenham, has acknowledged that Circuit Breaker wants soft or muddy ground, a detail that matters enormously — when the surface suits him and he gets a race to his liking, he can be effective, but he is not a horse to rely on in all conditions. For now, he remains a capable but unpredictable competitor, a horse that will have his admirers but whose best days may belong to the spring.

⚡ Strengths and risks

What helps this horse and what to watch out for
✓ What works in their favour
✔ Excellent record on good ground: 1 wins from 4 starts (25%)
⚠ What to watch out for
⚠ Poor record on standard ground: 0 wins from 9 starts
⚠ Struggles on LH Galloping tracks: 0 wins from 12 starts

🎯 Where this horse runs best

Results split by ground, distance, race level and track shape
🌧 Ground
Good (a little give)
Loves
Soft (muddy)
Good to soft (some give)
Unknown
Standard to slow (all-weather)
Unknown
Good to firm (fairly firm)
Unknown
Standard (all-weather)
Avoids
📏 Race distance
1M3F – 1M4F
Unknown
1M6F – 2M
Ok
Long Distance (2M+)
Ok
🏅 Race level
Class 2 (high-level)
Avoids
Class 3 (mid-level)
Avoids
Class 4 (standard)
Loves
Class 5 (entry-level)
Loves
🏟 Track shape
Right-handed, long straights
Loves
Right-handed, tight turns
Loves
Right-handed, hilly
Unknown
Left-handed, tight turns
Unknown
Left-handed, long straights
Avoids

📅 Recent runs

The last 10 races, most recent first
25 Sep
3rd
Haydock Park
1m6f – 2m · Soft · 14 runners
18 Aug
4th
Lingfield Park
1m6f – 2m · Standard · 8 runners
15 Jun
4th
Carlisle
1m6f – 2m · Good · 14 runners
8 May
6th
Ascot
1m6f – 2m · Good · 13 runners
3 Apr
3rd
Lingfield Park
1m6f – 2m · Standard · 14 runners
3 Mar
6th
Wolverhampton
1m6f – 2m · Standard
1 Feb
6th
Market Rasen
Long Distance (2m+) · Soft · 8 runners
6 Jan
2nd
Wolverhampton
Long Distance (2m+) · Standard · 6 runners
30 Dec
2nd
Wolverhampton
1m6f – 2m · Standard · 8 runners
11 Oct
9th
York
Long Distance (2m+) · Good · 17 runners

🏇 Jockeys

Every jockey who has ridden this horse, most rides first
Cieren Fallon Current jockey
0%
Win rate
0/5
Wins / rides
25%
Win rate
1/4
Wins / rides
50%
Win rate
1/2
Wins / rides
50%
Win rate
1/2
Wins / rides
Jack Dace
0%
Win rate
0/2
Wins / rides
0%
Win rate
0/1
Wins / rides
0%
Win rate
0/1
Wins / rides
0%
Win rate
0/1
Wins / rides
0%
Win rate
0/1
Wins / rides
0%
Win rate
0/1
Wins / rides
0%
Win rate
0/1
Wins / rides
0%
Win rate
0/1
Wins / rides

🏟 Course record

Win rate at each course this horse has visited
CourseRacesResultsLast runWin rate
Wolverhampton
Galloping
4 2 seconds, 2 other 3 Mar 0%
Kempton Park
Galloping
3 2 wins, 1 third 20 Oct 66.7%
Haydock Park
Galloping
3 1 second, 2 thirds 25 Sep 0%
Southwell
Galloping
2 1 third, 1 other 28 Mar 0%
Ascot
Galloping
2 2 other 8 May 0%
Lingfield Park
Sharp
2 1 third, 1 other 18 Aug 0%
Windsor
Sharp
1 1 win 8 May 100%
Market Rasen
Sharp
1 1 other 1 Feb 0%
Hamilton Park
Sharp
1 1 other 15 Jul 0%
York
Galloping
1 1 other 11 Oct 0%
Newcastle
Galloping
1 1 other 18 Apr 0%
Carlisle
Undulating
1 1 other 15 Jun 0%
Musselburgh
Sharp
1 1 other 2 Feb 0%
Doncaster
Galloping
1 1 third 2 Jun 0%
Salisbury
Undulating
1 1 other 16 May 0%