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Horse profile

Go On Mayson (GB)

4yo gelding (at last run, Oct 2018) · Last trainer Sam Thomas · Last owner Walters Plant Hire P T Civil Engineering
by Mayson (GB) out of Red Tiara (USA) (Mr Prospector)
12 runs · 9 courses · from Jul 2016
As at 27 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 1 Oct 2018 — 2,948 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2018 · 14th of 16 Last raced off OR 100
KTB Profile

Go On Mayson (GB) is yet to win from 12 starts, though has placed once. Best effort: 3rd of 8 at Ffos Las (Jul 2018). Last raced off a career-high mark of 100.

Based on 12 archived runs · updated 27 Oct 2026
KTB at a glance OR at career high
Official rating100At career-high mark
100 54–100

KTB Speed and Rating

KTB Speed

Best recent Speed 104 the best of the last 3 graded (A or B) runs · Newton Abbot, 15 Aug 2018

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 →

Jumps 2 figures · best 104B · median 92.5
GoingRunsBestMedianSince 27 Oct 2025
Good2104B92.5—
DistanceRunsBestMedianSince 27 Oct 2025
1m5f – 2m1———
2m1f – 2m4f1———
Flat 6 figures · best 122A · median 68
GoingRunsBestMedianSince 27 Oct 2025
Good to Soft384A69—
Good to Firm3122A67—
DistanceRunsBestMedianSince 27 Oct 2025
1m – 1m1f4122A63—
1m2f – 1m4f284A76.5—

Of 10 runs looked at, 2 have no figure: obstacles omitted — the race ran a shortened course (2).

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 8 figures from 10 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating (jumps) 95A the best of the last 3 rated runs · Newton Abbot, 15 Aug 2018 Official rating 100 at the last jumps run, 1 Oct 2018

Best recent KTB Rating (flat) 52A the best of the last 3 rated runs · Chepstow, 26 Jun 2017 Official rating 54 at the last flat run, 24 Aug 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. What this means →

Jumps 4 figures · best 95A · median 91
GoingRunsBestMedianSince 27 Oct 2025
Good395A94—
Good to Firm1———
DistanceRunsBestMedianSince 27 Oct 2025
2m1f – 2m4f395A88—
1m5f – 2m1———
Flat 8 figures · best 74A · median 49.5
GoingRunsBestMedianSince 27 Oct 2025
Good to Firm574A52—
Good to Soft349A48—
DistanceRunsBestMedianSince 27 Oct 2025
1m – 1m1f558B50—
1m2f – 1m4f249A48.5—
6f – 7f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 12 figures from 12 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
Mayson (GB)

Progeny in our archive have won 10.7% of 7,380 runs since Jan 2008 (442 horses).

Strongest at trips under 6f (all codes): 13.8% from 1,730. Weakest over 1m5f – 2m (all codes): 2.8% from 106.

GoingRunsWinsSRvs sireThis horse
Firm22627.3%+16.6—
Good to Firm1,02312111.8%+1.10 from 6
Good1,37013910.1%−0.60 from 3
Good to Soft8069211.4%+0.70 from 3
Soft97211511.8%+1.1—
Heavy3233310.2%−0.5—
Standard (AW)2,86428510%−0.7—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f1,73023813.8%+3.1—
6f – 7f3,91140010.2%−0.50 from 1
1m – 1m1f1,1451119.7%−10 from 5
1m2f – 1m4f452378.2%−2.50 from 2
1m5f – 2m10632.8%−7.90 from 1
2m1f – 2m4f3013.3%−7.40 from 3
2m5f – 3m6116.7%+6—

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
Red Tiara (USA) (Mr Prospector)

8 siblings in the archive, 5 winners — best of them Therthaar (GB) (5 wins).

The wins came over 6f–1m3f; the highest grade won is Class 4 (Therthaar (GB)).

ProduceRunsWinsWin tripsBest grade
Therthaar (GB)1351m½f–1m3fClass 4
Adorn (GB)716fClass 4
Red Turban (GB)316fClass 5
Furbelow (GB)316fClass 5
Argent (GB)511m½fClass 6
Red Diadem (GB)50——
The Gillie (GB)50——
Red Coronet (GB)20——

Record by conditions

GoingRunsWinsSR£1
Good to Firm 6 0 0% −6.00
Good 3 0 0% −3.00
Good to Soft 3 0 0% −3.00

ClassRunsWinsSR£1
Class 4 5 0 0% −5.00
Class 5 4 0 0% −4.00
Class 6 3 0 0% −3.00

CourseRunsWinsSR£1
Newton Abbot 2 0 0% −2.00
Ffos Las 2 0 0% −2.00
Chepstow 2 0 0% −2.00
Bangor-on-Dee 1 0 0% −1.00
Leicester 1 0 0% −1.00
Haydock 1 0 0% −1.00
Nottingham 1 0 0% −1.00
Windsor 1 0 0% −1.00
Newbury 1 0 0% −1.00

DistanceRunsWinsSR£1
1m – 1m1f 5 0 0% −5.00
2m1f – 2m4f 3 0 0% −3.00
1m2f – 1m4f 2 0 0% −2.00
1m5f – 2m 1 0 0% −1.00
6f – 7f 1 0 0% −1.00

JockeyRunsWinsSR£1
Richard Patrick 4 0 0% −4.00
J F Egan 2 0 0% −2.00
Shane Kelly 2 0 0% −2.00
Paddy Vaughan 1 0 0% −1.00
Timmy Murphy 1 0 0% −1.00
Stevie Donohoe 1 0 0% −1.00
Andrew Mullen 1 0 0% −1.00

HeadgearRunsWinsSR£1
None 7 0 0% −7.00
Tongue tie 4 0 0% −4.00
Blinkers 1 0 0% −1.00

SeasonRunsWinsSR£1
2018 4 0 0% −4.00
2017 6 0 0% −6.00
2016 2 0 0% −2.00

TypeRunsWinsSR£1
Flat 8 0 0% −8.00
Hurdle 4 0 0% −4.00

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
2018 · 4 runs
01 Oct 18+31d Newton Abbot Sky Sports Racing Launching In 2019 Conditional Jockeys' Selling Handicap Hurdle Class 5 · 18.5f · Good · 16 ran 14/16 6 11-12 100—88C Richard Patrick 22/1
31 Aug 18+16d Bangor-on-Dee Bangorbet Maiden Hurdle Class 5 · 16.5f · Good · 8 ran 4/8 3 10-8 —81B94A Richard Patrick 50/1
15 Aug 18+33d Newton Abbot Archive Playlists Available On attheraces.com Maiden Hurdle Class 4 · 18.5f · Good · 15 ran 6/15 6 10-5 —104B95A Richard Patrick 25/1
13 Jul 18+323d Ffos Las 3A's Leisure Now Selling Holiday Homes Maiden Hurdle Class 4 · 20f · Good To Firm · 8 ran 3/8 22 10-6 ——88A Richard Patrick 20/1
2017 · 6 runs
24 Aug 17+30d Chepstow 188Bet Handicap (Div 2) Class 6 · 8f · Good To Soft · 11 ran 9/11 7 8-7 5459C32C Paddy Vaughan 12/1
25 Jul 17+29d Ffos Las Visit attheraces.com Handicap (Div 1) Class 6 · 10f · Good To Soft · 9 ran 7/9 1¾ 9-3 6084A49A Timmy Murphy 25/1
26 Jun 17+21d Chepstow Good Luck Caroline Williams Mum-To-Be Classified Stakes Class 6 · 8f · Good To Firm · 8 ran 5/8 8 9-0 63122A52A J F Egan 10/1
05 Jun 17+10d Leicester Swannington Handicap Class 4 · 10f · Good To Soft · 12 ran 11/12 5 8-9 6869C48C Stevie Donohoe 50/1
26 May 17+44d Haydock Wigan Warriors Business Club Handicap Class 4 · 8f · Good To Firm · 10 ran 8/10 4 9-0 7367A47A Andrew Mullen 40/1
12 Apr 17+248d Nottingham toteplacepot Six Places In Six Races Maiden Stakes Class 5 · 8.5f · Good To Firm · 16 ran 13/16 1¼ 9-5 —56C50C J F Egan 16/1
2016 · 2 runs
07 Aug 16+23d Windsor Academy Insurance Maiden Stakes Class 5 · 8f · Good To Firm · 6 ran 4/6 3¾ 9-5 ——58B Shane Kelly 10/1
15 Jul 16 Newbury Highclere Thoroughbred Racing EBF Stallions Maiden Stakes (Plus 10) (Str) Class 4 · 7f · Good To Firm · 14 ran 7/14 ¾ 9-5 ——74A Shane Kelly 66/1

Quick answers

How many races has Go On Mayson won?
Go On Mayson (GB) has yet to win, from 12 archived starts between 2016 and 2018. Placed 1 time in total (8.3% of starts).
Who trained Go On Mayson?
Go On Mayson (GB) was trained by Sam Thomas on the most recent run on record, at Newton Abbot on 1 October 2018.
Who is Go On Mayson's sire?
Go On Mayson (GB) is by Mayson (GB) out of Red Tiara (USA), whose sire is Mr Prospector.
What is Go On Mayson's official rating?
The most recent official rating on record is 100, from the run on 1 October 2018. That is also the highest on record.
What is Go On Mayson's sire's record?
Mayson (GB)'s progeny in our archive have won 10.7% of 7,380 runs since Jan 2008 (442 horses), Flat and jumps together. Strongest at trips under 6f (all codes): 13.8% from 1,730. Weakest over 1m5f – 2m (all codes): 2.8% from 106.
Who are Go On Mayson's siblings?
Out of Red Tiara (USA), Go On Mayson (GB) has 8 other produce in our archive, 5 of them winners. Most wins: Therthaar (GB) (5). Highest grade won: Class 4 (Therthaar (GB)). The wins came over 6f–1m3f. As at Oct 2026.

Record shown from July 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.