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Horse profile

Brightest Star (IRE)

2yo filly (at last run, Oct 2024) · Last trainer A P O'Brien · Last owner Derrick Smith Mrs John Magnier Michael Tabor
by No Nay Never (USA) out of Ultrasonic (USA) (Mizzen Mast)
1 run · 1 course · from Oct 2024
As at 27 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 13 Oct 2024 — 744 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2024 · 8th of 12
KTB Profile

Brightest Star (IRE) is a lightly raced filly by No Nay Never out of Ultrasonic, whose dam has produced three winners from five runners to race including Morty with six wins. The sire’s progeny have recorded 758 wins from 6,279 runs since Jan 2008. She made her only start in Oct 2024 when prominent and finishing 8 of 12 in the Irish Stallion Farms EBF Fillies Maiden at Naas on soft ground over 6f-7f.

Based on 1 archived run · run-style from 1 commented run since Oct 2024 · updated 27 Oct 2026

KTB Speed and Rating

KTB Speed

Best recent Speed 42 the best of the last 1 graded (A or B) run · Naas, 13 Oct 2024

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 68A the best of the last 1 rated run · Naas, 13 Oct 2024

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. 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.

Pedigree intelligence

Sire

Progeny in our archive have won 12.1% of 6,333 runs since Jan 2008 (707 horses).

Weakest on good to soft going: 9% from 612. Weakest over 1m5f – 2m (all codes): 7.6% from 185.

GoingRunsWinsSRvs sireThis horse
Firm16531.3%+19.2—
Good to Firm92712213.2%+1.1—
Good1,48918112.2%+0.1—
Good to Soft612559%−3.1—
Soft84511013%+0.90 from 1
Heavy2853713%+0.9—
Standard (AW)2,15925611.9%−0.2—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f91112213.4%+1.3—
6f – 7f3,38944013%+0.90 from 1
1m – 1m1f1,18313111.1%−1—
1m2f – 1m4f583549.3%−2.8—
1m5f – 2m185147.6%−4.5—
2m1f – 2m4f7756.5%−5.6—
2m5f – 3m500%−12.1—

Flat and jumps together (all codes) · since Jan 2008 · as at 27 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Ultrasonic (USA) (Mizzen Mast)

5 siblings in the archive, 3 winners — best of them Morty (GB) (6 wins).

The wins came over 5f–7f; the highest grade won is Class 6 (Morty (GB)).

ProduceRunsWinsWin tripsBest grade
Morty (GB)3365f–6fClass 6
Controlled (IRE)615f—
Tiverton (GB)617f—
Smash Factor (IRE)20——
Galton (GB)170——

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

Form

DateCourseRace PosBtn Wgt SpdKTB Jockey SP
2024 · 1 run
13 Oct 24 Naas Irish Stallion Farms EBF Fillies Maiden 6f · Yielding · 12 ran Handy near far rail contingent early - keen through early stages - pushed along to challenge over 2 1/2f out but found nothing more from 1 1/2f out home 8/12 1¼ 9-2 42A68A Wayne Lordan 4/1

Quick answers

How many races has Brightest Star won?
Brightest Star (IRE) has yet to win, from 1 archived start in 2024.
Who trained Brightest Star?
Brightest Star (IRE) was trained by A P O'Brien on the most recent run on record, at Naas on 13 October 2024.
Who is Brightest Star's sire?
Brightest Star (IRE) is by No Nay Never (USA) out of Ultrasonic (USA), whose sire is Mizzen Mast.
What is Brightest Star's sire's record?
No Nay Never (USA)'s progeny in our archive have won 12.1% of 6,333 runs since Jan 2008 (707 horses), Flat and jumps together. Weakest on good to soft going: 9% from 612. Weakest over 1m5f – 2m (all codes): 7.6% from 185.
Who are Brightest Star's siblings?
Out of Ultrasonic (USA), Brightest Star (IRE) has 5 other produce in our archive, 3 of them winners. Most wins: Morty (GB) (6). Highest grade won: Class 6 (Morty (GB)). The wins came over 5f–7f. As at Oct 2026.

Record shown from October 2024. Our archive holds racing in Great Britain, Ireland and France from January 2005. Runs in other countries are not in it, and earlier runs are not available from our data provider. In-running comments are available from 2024 onward.