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Horse profile

Computer (USA)

3yo colt (at last run, May 2014) · Last trainer Charles Hills · Last owner K Abdullah
by Mizzen Mast (USA) out of Tolerance (USA) (Seeking The Gold)
2 runs · 2 courses · from Apr 2014
As at 4 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 7 May 2014 — 4,564 days ago. Our archive can't say whether the horse is still in training.
Last run May 2014 · 9th of 11
KTB Profile

Lightly raced, with 2 archived starts between Apr 2014 and May 2014, the last of them as a 3yo colt. Finished 9 of 11 at Chester last time. By Mizzen Mast (USA), whose progeny in our archive have won 11.4% of 1,610 runs since Jan 2008.

Based on 2 archived runs · updated 4 Nov 2026

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 78A the best of the last 2 rated runs · Newmarket, 17 Apr 2014

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 2 figures · best 78A · median 66.5
GoingRunsBestMedianSince 4 Nov 2025
Good278A66.5—
DistanceRunsBestMedianSince 4 Nov 2025
1m2f – 1m4f1———
1m – 1m1f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 2 figures from 2 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
Mizzen Mast (USA)

Progeny in our archive have won 11.4% of 1,610 runs since Jan 2008 (130 horses).

Strongest on standard (aw) going: 14.4% from 631. Weakest on good to soft going: 4.9% from 162. Weakest over 1m5f – 2m (all codes): 8.3% from 181.

GoingRunsWinsSRvs sireThis horse
Firm9111.1%−0.3—
Good to Firm235229.4%−2—
Good3324313%+1.60 from 2
Good to Soft16284.9%−6.5—
Soft191147.3%−4.1—
Heavy50510%−1.4—
Standard (AW)6319114.4%+3—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f56814.3%+2.9—
6f – 7f4685712.2%+0.8—
1m – 1m1f4536414.1%+2.70 from 1
1m2f – 1m4f385369.4%−20 from 1
1m5f – 2m181158.3%−3.1—
2m1f – 2m4f5347.5%−3.9—
2m5f – 3m1100%−11.4—
Over 3m300%−11.4—

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

Dam
Tolerance (USA) (Seeking The Gold)

2 siblings in the archive, 0 winners.

ProduceRunsWinsWin tripsBest grade
Vernier (GB)10——
Henley Hill (GB)10——

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

Form

DateCourseRace PosBtn Wgt KTB Jockey SP
2014 · 2 runs
07 May 14+20d Chester Boodles Diamond Maiden Stakes (BOBIS Race) Class 3 · 1m2½f · Good · 11 ran 9/11 3¼ 9-5 55C James Doyle 10/1
17 Apr 14 Newmarket Swan At Lavenham Wood Ditton Stakes (BOBIS Race) Class 4 · 1m · Good · 15 ran 7/15 ½ 9-5 78A James Doyle 20/1

Quick answers

How many races has Computer won?
Computer (USA) has yet to win, from 2 archived starts in 2014.
Who trained Computer?
Computer (USA) was trained by Charles Hills on the most recent run on record, at Chester on 7 May 2014.
Who is Computer's sire?
Computer (USA) is by Mizzen Mast (USA) out of Tolerance (USA), whose sire is Seeking The Gold.
What is Computer's sire's record?
Mizzen Mast (USA)'s progeny in our archive have won 11.4% of 1,610 runs since Jan 2008 (130 horses), Flat and jumps together. Strongest on standard (aw) going: 14.4% from 631. Weakest on good to soft going: 4.9% from 162. Weakest over 1m5f – 2m (all codes): 8.3% from 181.
Who are Computer's siblings?
Out of Tolerance (USA), Computer (USA) has 2 other produce in our archive, 0 of them winners. As at Nov 2026.

Record shown from April 2014. Our archive holds racing in Great Britain, Ireland and France from January 2005. Any runs before that, or in other countries, are not in it. In-running comments are available from 2024 onward.