How many races has Nuclear Fusion won?

Nuclear Fusion (IRE) has yet to win, from 1 archived start in 2018.

Who trained Nuclear Fusion?

Nuclear Fusion (IRE) was trained by R J Osborne on the most recent run on record, at Doncaster on 28 April 2018.

Who is Nuclear Fusion's sire?

Nuclear Fusion (IRE) is by The Carbon Unit (USA) out of The Mighty Atom (USA), whose sire is Sky Mesa.

Who are Nuclear Fusion's siblings?

Out of The Mighty Atom (USA), Nuclear Fusion (IRE) has 4 other produce in our archive, 2 of them winners. Most wins: Split The Atom (IRE) (7). Highest grade won: Class 4 (Ionization (IRE)). The wins came over 5f–7½f. As at Nov 2026.

Horse profile

Nuclear Fusion (IRE)

3yo colt (at last run, Apr 2018) · Last trainer R J Osborne · Last owner Thistle Bloodstock Limited

by The Carbon Unit (USA) out of The Mighty Atom (USA) (Sky Mesa)

1 run · 1 course · from Apr 2018

As at 5 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily

No run recorded since 28 Apr 2018 — 3,113 days ago. Our archive can't say whether the horse is still in training.

Last run Apr 2018 · 11th of 11

KTB Profile

Lightly raced, with 1 archived start in Apr 2018 as a 3yo colt. Finished 11 of 11 at Doncaster last time. By The Carbon Unit (USA), whose progeny in our archive have won 8.2% of 683 runs since Sep 2013.

Based on 1 archived run · updated 5 Nov 2026

0–1Wins / Runs
0%Strike rate
0 (0%)Placed
−1.00£1 level staken=1 at SP

KTB Speed and Rating

KTB Speed

Best recent Speed — no A or B graded figure in the last 3 runs; the figures below carry grade C

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 1 figure · too few for a breakdown

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 1 figure from 1 run · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 49^C the best of the last 1 rated run · Doncaster, 28 Apr 2018

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 — its best recent day. The KTB Rating on a racecard is a different reading of the same figures: the level the horse has been running to, an average of up to its last six runs with the latest counting most, so the two can differ. A, B or C on a run is how much known form was in that race. What this means →

Flat 1 figure · too few for a breakdown

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 1 figure from 1 run · 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

The Carbon Unit (USA)

Progeny in our archive have won 8.2% of 683 runs since Sep 2013 (44 horses).

Going	Runs	Wins	SR	vs sire	This horse
Firm	2	1	50%	+41.8	—
Good to Firm	110	9	8.2%	0	—
Good	176	10	5.7%	−2.5	—
Good to Soft	79	9	11.4%	+3.2	—
Soft	141	12	8.5%	+0.3	0 from 1
Heavy	57	4	7%	−1.2	—
Standard (AW)	118	11	9.3%	+1.1	—

Distance (all codes)	Runs	Wins	SR	vs sire	This horse
Under 6f	36	5	13.9%	+5.7	—
6f – 7f	152	12	7.9%	−0.3	0 from 1
1m – 1m1f	159	12	7.5%	−0.7	—
1m2f – 1m4f	162	11	6.8%	−1.4	—
1m5f – 2m	134	13	9.7%	+1.5	—
2m1f – 2m4f	34	3	8.8%	+0.6	—
2m5f – 3m	5	0	0%	−8.2	—
Over 3m	1	0	0%	−8.2	—

Flat and jumps together (all codes) · since Sep 2013 · as at 5 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam

The Mighty Atom (USA) (Sky Mesa)

4 siblings in the archive, 2 winners — best of them Split The Atom (IRE) (7 wins).

The wins came over 5f–7½f; the highest grade won is Class 4 (Ionization (IRE)).

Produce	Runs	Wins	Win trips	Best grade
Split The Atom (IRE)	54	7	5f–7f	—
Ionization (IRE)	14	2	6f–7½f	Class 4
Boyce (IRE)	3	0	—	—
Molecule (IRE)	4	0	—	—

Too few runs for meaningful splits. The full record is below.

Form

Date	Course	Race	Pos	Btn	Wgt	Spd	KTB	Jockey	SP
2018 · 1 run
28 Apr 18	Doncaster	Morgan Sindall Sweco Maiden Stakes Class 4 · 7f · Soft · 11 ran	11/11	38	9-1	-72^C	49^C	Sam Hitchcott	33/1

Quick answers

How many races has Nuclear Fusion won?: Nuclear Fusion (IRE) has yet to win, from 1 archived start in 2018.
Who trained Nuclear Fusion?: Nuclear Fusion (IRE) was trained by R J Osborne on the most recent run on record, at Doncaster on 28 April 2018.
Who is Nuclear Fusion's sire?: Nuclear Fusion (IRE) is by The Carbon Unit (USA) out of The Mighty Atom (USA), whose sire is Sky Mesa.
What is Nuclear Fusion's sire's record?: The Carbon Unit (USA)'s progeny in our archive have won 8.2% of 683 runs since Sep 2013 (44 horses), Flat and jumps together.
Who are Nuclear Fusion's siblings?: Out of The Mighty Atom (USA), Nuclear Fusion (IRE) has 4 other produce in our archive, 2 of them winners. Most wins: Split The Atom (IRE) (7). Highest grade won: Class 4 (Ionization (IRE)). The wins came over 5f–7½f. As at Nov 2026.