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Trainer profile

John Best & Karen Jewell

158 runners in the last 5 seasons · 33 individual horses
As at 6 Nov 2026 · KTB archive: 2005–present, updated daily
Last runner Mar 2023
Last 5 seasons Lifetime (2021→)
from 1 Jan 2022
13–158
Wins / Runs
8.2%
Strike rate
n=158
35 (22%)
Placed
0.92
Fair A/E
n=157 · 0.78 incl. margin
−60.25
£1 level stake
n=158 at SP · −38.1%
£143k
Prize money (window)
Strike by season
3.2%
KTB Yard Profile

Sends out around 30 runners a season, across both codes, winning with 8% of them — a touch below the margin-free market read across five seasons (Fair A/E 0.92).

Deterministic profile computed from 158 archived runs (last 5 seasons) · updated 6 Nov 2026
The read

The record is strongest at Lingfield (AW) (12.2%, n=41), clear of the yard's 8.2% baseline. The yard also reads well over 1m2f – 1m4f (16.1%, n=62) and off a 15-30-day break (11.5%, n=52).

Written from the figures on this page — every claim carries its sample. Descriptive, not a tip.

Yard patterns

the angles behind the record · vs 8.2% baseline
Fresh · 61+ days off
7.7%−0.5
n=26 · A/E 1.08 · £1 +2.88
New recruits · first run for the yard
40%+31.8
n=5 · A/E 4.72 · £1 +23.88
Debutants · first career start
0%−8.2
n=15 · A/E 0.00 · £1 −15.00
First-time headgear · true-first definition
0%−8.2
n=7 · A/E 0.00 · £1 −7.00
Headgear returns · back on after a bare run
0%−8.2
n=1 · A/E 0.00 · £1 −1.00
When favourite
22.2%
n=9 · A/E 0.71 · £1 −3.50
Claiming riders · a claimer in the saddle
0%−8.2
n=13 · A/E 0.00 · £1 −13.00

Each tile is the record in that situation vs the 8.2% baseline — descriptive splits with the sample always shown, for you to weigh. Tiles under 30 runs render muted. Headgear figures use the true-first definition (first gear appearance in the captured career); returns are gear back on after a bare run. Claiming riders are runs where the booked rider carried a weight claim. Group / Graded covers pattern and listed races. The same beliefs, tested across every yard and every GB and Irish race since 2005: Racing myths.

Notable angles

vs their own baseline
Over 1m2f – 1m4f 16.1% vs 8.2% · n=62
With C&D winners 17.1% vs 8.2% · n=35
At Lingfield (AW) 12.2% vs 8.2% · n=41
Off a 15-30-day break 11.5% vs 8.2% · n=52
With a new jockey booking 5.7% vs 8.2% · n=88
In Class 6 11.1% vs 8.2% · n=45
Descriptive splits ranked by divergence × sample — insight, not instruction. Every angle carries its N; nothing under 30 runs qualifies. Rows within 2pts of the baseline appear only when the market-relative read (Fair A/E) diverges, and show it.

Record by conditions

same window as header

Race type

TypeRWSR£1
Flat 115 12 10.4% −26.75
Hurdle 21 0 0% −21.00
Chase 13 1 7.7% −3.50
NH Flat 9 0 0% −9.00

Going

GoingRWSR£1
Standard (AW) 95 10 10.5% −18.25
Good 28 1 3.6% −19.50
Good to Firm 16 1 6.3% −13.00
Soft 13 1 7.7% −3.50
Good to Soft 6 0 0% −6.00

Courses

CourseRWSR£1
Lingfield (AW) 41 5 12.2% −19.25
Kempton (AW) 37 3 8.1% −5.50
Chelmsford City (AW) 15 2 13.3% +8.50
Plumpton 13 1 7.7% −3.50
Fontwell 12 0 0% −12.00
Lingfield 6 0 0% −6.00
Epsom Downs 5 0 0% −5.00
Huntingdon 5 0 0% −5.00
Windsor 5 0 0% −5.00
Brighton 3 1 33.3% +0.00
Goodwood 3 0 0% −3.00
Newmarket 3 1 33.3% +5.50
Kempton 2 0 0% −2.00
Wolverhampton (AW) 2 0 0% −2.00
York 1 0 0% −1.00

Class

ClassRWSR£1
Class 5 75 5 6.7% −41.50
Class 6 45 5 11.1% −2.50
Class 4 30 3 10% −8.25
Class 2 5 0 0% −5.00
Class 3 3 0 0% −3.00

Market position

In the bettingRWSRA/E£1
Favourite 9 2 22.2% 0.71 −3.50
2nd–3rd fav 38 7 18.4% 1.11 −8.75
4th–6th fav 51 3 5.9% 0.81 −14.00
7th+ in betting 60 1 1.7% 0.73 −34.00
Fair A/E per band is the tell: near 1.00 the market had it priced right; well above, the wins came where the market didn't expect them.

Rows below n=30 are shown faded — a small sample is a fact, not a trend. Every figure carries its N.

Horses trained

same window as header · most-raced first
HorseRWPlLast ran
Red Flyer (IRE)from Tom Ward · then Karen Jewell 13 3 7 10 Mar 23
Pablo Prince (GB)from John Best · then Karen Jewell 12 3 6 4 Feb 23
Bella Colorossa (GB)from Mark Pattinson 10 1 3 4 Mar 23
Torbellino (GB)from John Best · then Karen Jewell 10 1 4 1 Mar 23
Elmejor (IRE)from John Best · then Karen Jewell 10 1 1 4 Feb 23
Smarden Flyer (IRE)from Linda Jewell 9 0 1 18 Feb 23
Uallrightharry (IRE)from Linda Jewell · then Karen Jewell 8 1 4 30 Jan 23
Millies Mite (IRE)from Eoin Doyle · then Karen Jewell 7 0 0 16 Sep 22
Pleasure Garden (USA)from Linda Jewell · then Karen Jewell 6 0 1 20 Feb 23
Bolberry Down (IRE)then Karen Jewell 5 0 0 6 Feb 23
Delvey (IRE)then Karen Jewell 5 0 1 7 Jan 23
Lady Beaconsfield (IRE) 5 0 0 7 Dec 22
All 33 horses sent out in this window. Runs, wins and places only: a strike rate or a return on a handful of runs is noise, so none is quoted per horse — each horse's full record is on its own page.
Where they came from · where they went next

Of the 33 horses listed, 16 arrived from another yard in our archive, most often from John Best (8) and Linda Jewell (5); 17 had their first archived run for this yard.

20 have since run for another yard, most often for Karen Jewell (17) and Iain Jardine (2); 13 have no later run for another yard in our archive.

Read from each listed horse's whole archived career (2005 onwards), not only this window, and counted over the horses listed above, not the whole string. “First archived run” means our archive holds nothing earlier, not that the horse was unraced. A horse with no later run elsewhere may still be here, be off the track, or have run somewhere our archive does not cover — none of that is asserted.

When the yard fires

strike by month, 5 seasons
JFMAMJJASOND
17417013001300014
A flat yard: the season runs Mar–Oct. Muted months are small samples (under 30 runs) — read them with the caution they deserve.

Jockey bookings

same window · biggest samples first
RiderRWSR£1
Robert Havlin 16 2 12.5% −7.00
Richard Kingscote 15 2 13.3% +14.75
Hollie Doyle 10 2 20% +1.12
Luke Morris 9 1 11.1% −4.50
Hayley Turner 8 0 0% −8.00
J F Egan 8 1 12.5% −3.50
Niall Houlihan 8 0 0% −8.00
Tom Cannon 8 0 0% −8.00
David Probert 7 3 42.9% +19.38
Kieran O'Neill 7 0 0% −7.00
James Best 7 0 0% −7.00
Brendan Powell 6 0 0% −6.00
Muted rows are under 30 rides.

Career highlights

lifetime archive, 2021→
16
Archived wins
£163k
Prize money
2022
Best season · 12 wins
Uallrightharry (IRE) — G.e.white & Sons Agricultural Buildings Handicap Chase Plumpton · Dec 2022 · Class 4
£7,126
Red Flyer (IRE) — Time Test Handicap Newmarket · May 2022 · Class 4
£6,696
Berrahri (IRE) — Ladies Day 2022 With Sophie Ellis-Bextor Handicap Chelmsford City (AW) · Mar 2022 · Class 5
£5,103
Notable horses
Pablo Prince (GB) Red Flyer (IRE) Elmejor (IRE) Berrahri (IRE) Buraback (IRE) Torbellino (GB)

Sires in the string

progeny record · win % by ground and trip
Free Eagle (IRE) 23.1% · 3–13
Progeny have won 10.6% of 2,415 runs since 2019 (190 horses). Weakest on Heavy going: 6.1% from 131.
Outstrip (GB) 23.1% · 3–13
Progeny have won 8.8% of 3,288 runs since 2019 (240 horses). Strongest over 1m2f – 1m4f (all codes): 12.8% from 635. Weakest over 1m5f – 2m (all codes): 5.7% from 264.
Maxios (GB) 10% · 1–10
Progeny have won 11.6% of 2,158 runs since 2017 (275 horses). Weakest on Standard (AW) going: 8.5% from 317. Weakest over 1m – 1m1f (all codes): 7.9% from 191.
Toronado (IRE) 10% · 1–10
Progeny have won 10.5% of 3,906 runs since 2018 (417 horses). Weakest on Heavy going: 6.5% from 199. Strongest at trips under 6f (all codes): 15.3% from 144.
Xtension (IRE) 10% · 1–10
Progeny have won 13.9% of 180 runs since 2018 (15 horses).
Markaz (IRE) 0% · 0–9
Progeny have won 9.6% of 999 runs since 2020 (66 horses).
Top line: the yard's own record with each sire's runners (win %, wins–runs), same window as the header; faded under 30 runs. Beneath it: every run by that sire's progeny in our archive since 2008, as at 6 Nov 2026 — what they have done, not a forecast. A going or a distance is named only where at least 100 progeny runs sit 3 or more points from the sire's own win rate. Distance bands cover Flat and jumps together.

The record

latest 50 of 188 · newest first

The latest 50 of 188 archived runners, newest first. The full record runs from 19 October 2021 to 10 March 2023.

DateCourseHorseRaceFinishSP
10 Mar 23 Kempton (AW) Red Flyer (IRE)J: Richard Kingscote Unibet 3 Uniboosts Per Day HandicapClass 4 · 12f · Standard To Slow · 11 ran 3rd 11/2
08 Mar 23 Kempton (AW) Divination (IRE)J: Kieran O'Neill Unibet Supporting International Women's Day Restricted Maiden Stakes (GBB Race)Class 5 · 12f · Standard To Slow · 10 ran 7th 80/1
04 Mar 23 Lingfield (AW) Bella Colorossa (GB)J: Jack Mitchell BetUK's Acca Club 5 Free Bet Classified StakesClass 6 · 12f · Standard · 7 ran 5th 14/1
01 Mar 23 Kempton (AW) Torbellino (GB)J: Luke Morris Unibet Non-Runner No-Bet All Cheltenham Races Fillies' HandicapClass 5 · 12f · Standard To Slow · 8 ran 2nd 10/1
26 Feb 23 Fontwell Elzaaro (IRE)J: Caoilin Quinn Benedict Cox Open Maiden NH Flat Race (GBB Race)Class 5 · 17.5f · Good · 9 ran 6th 150/1
25 Feb 23 Chelmsford City (AW) Take My Breath (IRE)J: Cam Hardie chelmsfordcityracecourse.com Restricted Maiden Stakes (GBB Race)Class 5 · 6f · Standard · 7 ran 6th 14/1
25 Feb 23 Lingfield (AW) Manila Mist (GB)J: Luke Morris talkSPORT Powered By Fans Novice Stakes (GBB Race)Class 4 · 8f · Standard · 9 ran 4th 80/1
20 Feb 23 Lingfield Pleasure Garden (USA)J: Marc Goldstein At The Races App Market Movers Handicap HurdleClass 5 · 16f · Good To Soft · 12 ran 9th 11/2
18 Feb 23 Lingfield (AW) Smarden Flyer (IRE)J: Robert Havlin Spreadex Sports Get 40 In Bonuses Classified StakesClass 6 · 7f · Standard · 10 ran 4th 25/1
14 Feb 23 Lingfield (AW) Cheeky Chester (GB)J: Tom Cannon Download The At The Races App Open NH Flat Race (GBB Race) (AWT)Class 5 · 16f · Standard To Slow · 8 ran 8th 20/1
08 Feb 23 Kempton (AW) Bella Colorossa (GB)J: Jack Mitchell Racing Tv Classified StakesClass 6 · 11f · Standard To Slow · 9 ran 7th 5/1
08 Feb 23 Kempton (AW) Divination (IRE)J: Jack Mitchell Unibet Horserace Betting Operator Of The Year Novice StakesClass 5 · 12f · Standard To Slow · 7 ran 5th 150/1
06 Feb 23 Fontwell Bolberry Down (IRE)J: Tom Cannon At The Races App Expert Tips Handicap HurdleClass 5 · 17.5f · Good · 12 ran PU 40/1
06 Feb 23 Fontwell Galway Mahler (IRE)J: Brendan Powell Cazoo Novices' Hurdle (GBB Race)Class 4 · 21.5f · Good · 10 ran 7th 40/1
04 Feb 23 Kempton (AW) Elmejor (IRE)J: Robert Havlin Join Racing TV Now HandicapClass 6 · 16f · Standard To Slow · 7 ran 6th 11/1
04 Feb 23 Lingfield (AW) Pablo Prince (GB)J: Luke Morris BetUK's Acca Club 5 Free Bet HandicapClass 6 · 13f · Standard · 12 ran 4th 4/1
02 Feb 23 Chelmsford City (AW) Take My Breath (IRE)J: Robert Havlin New Holland Fillies' Restricted Novice Stakes (GBB Race)Class 5 · 6f · Standard · 11 ran 10th 100/1
01 Feb 23 Kempton (AW) Pleasure Garden (USA)J: Luke Morris Unibet Extra Place Offers Every Day HandicapClass 5 · 16f · Standard To Slow · 9 ran 5th 10/1
30 Jan 23 Plumpton Uallrightharry (IRE)J: Marc Goldstein Tysers Handicap ChaseClass 4 · 25.5f · Good To Soft · 9 ran 4th 4/1
19 Jan 23 Kempton (AW) Bella Colorossa (GB)J: Jack Mitchell racingtv.com Classified StakesClass 6 · 11f · Standard To Slow · 10 ran 2nd 4/1

Drawn from the whole archive (2005 onwards), so it can include runs outside the window the header statistics cover. Non-runners are not listed. A finish shown in letters is a non-completion (F fell · UR unseated · PU pulled up · BD brought down).

Quick answers

What is John Best & Karen Jewell's strike rate?
John Best & Karen Jewell has won 13 of 158 runners since 2022, a strike rate of 8.2% (as at 6 November 2026). Figures are computed from our own results archive.
Which course does John Best & Karen Jewell do best at?
Lingfield (AW) by strike rate: 5 wins from 41 runners (12.2%) since 2022. Read from the 15 courses with the most runners on the same basis, and only those with at least 30 — a small sample cannot top the list, and a rarely-visited course is not in the comparison.
What is John Best & Karen Jewell's Fair A/E?
0.92, from 157 runners with a computed fair probability since 2022. Fair A/E compares actual wins with a margin-stripped market expectation, so 1.00 is par: above it the wins came at bigger prices than the margin-free market implied, below it they did not.
Fair A/E compares wins with a margin-stripped market expectation. Favourite-heavy samples — top yards, leading riders — naturally read a few points warm, so 1.05 means "beat the margin-free market read", not "the market underrates this by 5%". Three sample sizes are reported and never blended: runs (n), the ROI basis (n at SP), and the fair-A/E basis (n with a computed fair probability).

Strike rate is wins over all runs (n). ROI is £1 level stakes at SP over runs with a parseable price (n at SP). Fair A/E is wins over margin-stripped market expectation, over runs with a computed fair probability (n fair). The three Ns can legitimately differ and are always shown. Figures as at 6 November 2026, computed from our own results archive (2005 onwards; aggregates from 2008).