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Horse profile

Boost (GB)

3yo filly (at last run, Dec 2017) · Last trainer Sir Mark Prescott Bt · Last owner Cheveley Park Stud
by Pivotal (GB) out of Hooray (GB) (Invincible Spirit)
7 runs · 3 courses · from May 2016
As at 13 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 4 Dec 2017 — 3,235 days ago. Our archive can't say whether the horse is still in training.
Last run Dec 2017 · 14th of 14 2 wins · Wolverhampton (AW) Last raced off OR 81
KTB Profile

Boost (GB) is 2 from 7. Hasn't won since Feb 2017. Last raced off a career-high mark of 81.

Based on 7 archived runs · updated 13 Oct 2026

Progeny in our archive

Produce record

As a dam, Boost (GB) has 5 produce in the archive, 3 winners — most wins Benefit (GB) (3 wins).

The wins came over 6f–1m4f; the highest grade won is Listed (Benefit (GB)).

Family form: Some See Stars (GB) finished 3rd of 10 at Fairyhouse (IRE), 10 Oct 2026.

ProduceRunsWinsWin tripsBest grade
Benefit (GB)836fListed
Faro Island (GB)1431m1½f–1m4f—
Maximized (GB)726fClass 2
Some See Stars (GB)70——
Uplift (GB)20——

KTB Speed and Rating

KTB Speed

Best recent Speed 109 the best of the last 3 graded (A or B) runs · Wolverhampton (AW), 14 Jan 2017

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.

Flat 5 figures · best 114C · median 101
GoingRunsBestMedianSince 13 Oct 2025
Standard (AW)5114C101—
DistanceRunsBestMedianSince 13 Oct 2025
6f – 7f5114C101—

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 5 figures from 5 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 84A the best of the last 3 rated runs · Wolverhampton (AW), 11 Mar 2017 Official rating 81 at the last run, 4 Dec 2017

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.

Flat 7 figures · best 84A · median 78
GoingRunsBestMedianSince 13 Oct 2025
Standard (AW)784A78—
DistanceRunsBestMedianSince 13 Oct 2025
6f – 7f784A78—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 7 figures from 7 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
Pivotal (GB)

Progeny in our archive have won 13.6% of 12,785 runs since Jan 2008 (1,019 horses).

Weakest over 2m5f – 3m (all codes): 7.4% from 108.

GoingRunsWinsSRvs sireThis horse
Firm82911%−2.6—
Good to Firm1,93725012.9%−0.7—
Good2,83538513.6%0—
Good to Soft1,60420012.5%−1.1—
Soft2,06928113.6%0—
Heavy7029713.8%+0.2—
Standard (AW)3,55651414.5%+0.92 from 7
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f1,16413411.5%−2.1—
6f – 7f4,40459413.5%−0.12 from 7
1m – 1m1f3,13149515.8%+2.2—
1m2f – 1m4f2,46834013.8%+0.2—
1m5f – 2m1,09311810.8%−2.8—
2m1f – 2m4f3974511.3%−2.3—
2m5f – 3m10887.4%−6.2—
Over 3m20210%−3.6—

Flat and jumps together (all codes) · since Jan 2008 · as at 13 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Hooray (GB) (Invincible Spirit)

6 siblings in the archive, 2 winners — best of them Restive Spirit (GB) (2 wins).

The wins came over 5f–1m; the highest grade won is Class 3 (Restive Spirit (GB)).

ProduceRunsWinsWin tripsBest grade
Restive Spirit (GB)921mClass 3
Downonmainstreet (IRE)525f–6fClass 4
Broomy Law (GB)280——
First Rate (GB)60——
Ceres Ring (GB)100——
Missira (IRE)20——

Record by conditions

ClassRunsWinsSR£1
Class 4 4 1 25% +0.50
Class 5 3 1 33% −1.56

CourseRunsWinsSR£1
Wolverhampton (AW) 4 2 50% +1.94
Kempton (AW) 2 0 0% −2.00
Southwell (AW) 1 0 0% −1.00

HeadgearRunsWinsSR£1
None 5 2 40% +0.94
Visor 1 0 0% −1.00
Cheekpieces 1 0 0% −1.00

SeasonRunsWinsSR£1
2017 5 2 40% +0.94
2016 2 0 0% −2.00

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

DateCourseRace PosBtn Wgt ORSpdKTB Jockey SP
04 Dec 17+14d Southwell (AW) Betway Sprint Handicap Class 4 · 6f · Standard · 14 ran 14/14 11 9-6 8134C44C Luke Morris 15/2
20 Nov 17+254d Wolverhampton (AW) sunbets.co.uk Handicap Class 4 · 7f · Standard · 11 ran 5/11 nk 9-2 81101A78A Luke Morris 7/1
11 Mar 17+22d Wolverhampton (AW) 32red.com Handicap Class 4 · 7f · Standard · 11 ran 4/11 hd 9-5 8189A84A Luke Morris 9/2
17 Feb 17+34d Wolverhampton (AW) 32red.com Handicap Class 4 · 7f · Standard · 5 ran 1/5 9-7 77114C76B Luke Morris 7/2
14 Jan 17+226d Wolverhampton (AW) 32Red.com Maiden Stakes Class 5 · 6f · Standard · 8 ran 1/8 8-7 —109A80A Luke Morris 4/9F
02 Jun 16+15d Kempton (AW) Irish Stallion Farms EBF Novice Fillies' Stakes (Plus 10) Class 5 · 6f · Standard · 10 ran 3/10 nse 9-0 ——76A Luke Morris 4/7F
18 May 16 Kempton (AW) British Stallion Studs EBF Novice Fillies' Stakes (Plus 10) Class 5 · 6f · Standard · 9 ran 3/9 1 9-0 ——79A Luke Morris 2/1

Quick answers

How many races has Boost (GB) won?
Boost (GB) won 2 of 7 archived starts between 2016 and 2017, a strike rate of 28.6%. Placed 4 times in total (57.1% of starts).
Who trained Boost (GB)?
Boost (GB) was trained by Sir Mark Prescott Bt on the most recent run on record, at Southwell (AW) on 4 December 2017.
Who is Boost (GB)'s sire?
Boost (GB) is by Pivotal (GB) out of Hooray (GB), whose sire is Invincible Spirit.
What is Boost (GB)'s official rating?
The most recent official rating on record is 81, from the run on 4 December 2017. That is also the highest on record.
What is Boost (GB)'s sire's record?
Pivotal (GB)'s progeny in our archive have won 13.6% of 12,785 runs since Jan 2008 (1,019 horses), Flat and jumps together. Weakest over 2m5f – 3m (all codes): 7.4% from 108.
Who are Boost (GB)'s siblings?
Out of Hooray (GB), Boost (GB) has 6 other produce in our archive, 2 of them winners. Most wins: Restive Spirit (GB) (2). Highest grade won: Class 3 (Restive Spirit (GB)). The wins came over 5f–1m. As at Oct 2026.
Has Boost (GB) produced winners?
As a dam, Boost (GB) has 5 produce in our archive, 3 of them winners. Most wins: Benefit (GB) (3). Highest grade won: Listed (Benefit (GB)). The wins came over 6f–1m4f. As at Oct 2026.

Record shown from May 2016. 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.