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Jockey profile

Dean Mernagh

345 rides in our archive record, 2005–2007 · 204 individual horses
As at 6 Nov 2026 · KTB archive: 2005–present, updated daily
Last ride Jul 2007 100% of rides on the flat
Archive record 2005–2007
No rides from 1 Jan 2008, where our aggregate statistics normally begin — showing the full archive record instead, 26 Feb 2005 to 14 Jul 2007. Figures that need a horse's earlier runs (debuts, time since a run, first-time headgear, new connections, last-time-out winners) are left out: for runs this early our archive cannot see what came before.
22–345
Wins / Runs
6.4%
Strike rate
n=345
56 (16%)
Placed
1.22
Fair A/E
n=341 · 1.06 incl. margin
+17.00
£1 level stake
n=345 at SP · +4.9%
£142k
Prize money (window)
Strike by season
6.6%
KTB Rider Profile

Rode 345 times in our archive record (2005–2007), almost all on the flat, winning on 6% of them — beating the margin-free market read across that record (Fair A/E 1.22).

Deterministic profile computed from 345 archived runs (archive record 2005–2007) · updated 6 Nov 2026
KTB at a glance Mel Brittain: 8.6% from 81
The read

The record is strongest at Southwell (AW) (10.2%, n=49), clear of the rider's 6.4% baseline. Rides in big fields of 14 or more have been a poor signal at 3.4% (n=117, Fair A/E 0.87). Mel Brittain supplied 23% of the rides and edges the rider's average (8.6% vs 6.4%, A/E 1.42) — the partnership beats the margin-free market read. The rider also read well on Good to Soft going (9.7%, n=31). The market has also underrated the rider in Class 7: Fair A/E 1.46 across 55 rides (9.1% strike, +54.00 to a £1 stake). The record read poorly at trips under 6f — 3% over 67 rides, 3.4pts below the baseline. The market has consistently overbet the rider in Class 5: Fair A/E 0.75 across 128 rides (3.9% strike, −18.50 to a £1 stake) — runners there underperformed what the price implied.

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

Riding patterns

the angles behind the record · vs 6.4% baseline
When favourite
33.3%
n=3 · A/E 1.25 · £1 +1.50
Big fields · 14+ runners
3.4%−3.0
n=117 · A/E 0.87 · £1 +48.00

Each tile is the record in that situation vs the 6.4% baseline — descriptive splits with the sample always shown, for you to weigh. Tiles under 30 runs render muted. Claiming rides are runs where the rider carried a weight claim. Group / Graded covers pattern and listed races. Tiles that depend on a horse's earlier runs (debuts, time off, first-time headgear, new connections, last-time-out winners) are not shown on an archive-era record: for runs this early our archive cannot see what came before.

Notable angles

vs their own baseline
At Southwell (AW) 10.2% vs 6.4% · n=49
At trips under 6f 3% vs 6.4% · n=67
In Class 5 3.9% vs 6.4% · n=128
With Bryan Smart 3% vs 6.4% · n=33
On Good to Soft going 9.7% vs 6.4% · n=31
In Class 7 9.1% vs 6.4% · n=55
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

Going

GoingRWSR£1
Good to Firm 122 6 4.9% −1.50
Standard (AW) 85 7 8.2% −16.00
Good 57 3 5.3% −5.00
Good to Soft 31 3 9.7% +58.00
Soft 28 1 3.6% −23.50
Firm 15 1 6.7% +6.00
Heavy 7 1 14.3% −1.00

Courses

CourseRWSR£1
Southwell (AW) 49 5 10.2% −1.50
Catterick 32 3 9.4% +0.50
Wolverhampton (AW) 27 2 7.4% −5.50
Musselburgh 24 2 8.3% +9.00
Redcar 23 1 4.3% −13.00
Thirsk 22 1 4.5% −11.00
Newcastle 22 0 0% −22.00
Beverley 19 1 5.3% +48.00
Hamilton 19 2 10.5% +69.00
Carlisle 17 0 0% −17.00
Ripon 13 0 0% −13.00
Ayr 13 3 23.1% +19.00
Pontefract 11 0 0% −11.00
Kempton (AW) 8 0 0% −8.00
Doncaster 8 0 0% −8.00

Class

ClassRWSR£1
Class 5 128 5 3.9% −18.50
Class 6 97 8 8.2% −12.50
Class 7 55 5 9.1% +54.00
Class 4 41 3 7.3% −8.00
Class 3 13 0 0% −13.00
Class 2 11 1 9.1% +15.00

Market position

In the bettingRWSRA/E£1
Favourite 5 2 40% 1.74 +4.50
2nd–3rd fav 27 4 14.8% 1.09 −6.00
4th–6th fav 97 11 11.3% 1.43 +36.50
7th+ in betting 216 5 2.3% 0.91 −18.00
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 ridden

same window as header · most-raced first
HorseRWPlLast ran
Guadaloup (GB) 11 2 4 3 Jul 07
Qaasi (USA) 7 1 2 28 Jan 07
Dispol Shabama (GB) 7 1 1 14 Sep 05
Bond Boy (GB) 6 1 2 15 Jul 05
Steel Grey (GB) 5 1 2 26 Apr 07
Aboustar (GB) 5 0 1 29 Dec 06
Zanderido (GB) 5 0 2 28 Aug 05
Undeterred (GB) 5 0 1 5 Aug 05
Bahamian Bay (GB) 4 1 1 21 Jun 07
Sea Rover (IRE) 4 1 2 12 Jun 07
Melandre (GB) 4 0 0 9 Apr 07
Black Oval (GB) 4 0 3 22 Jan 07
Showing the 60 most-raced of the 204 horses ridden in this window — each ran at least 2 times. Horses with fewer runs aren't listed; search finds any horse since 2005. 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.

By month

strike by month, 2005–2007
JFMAMJJASOND
0033105454017120
A flat rider: the season runs Mar–Oct. Muted months are small samples (under 30 runs) — read them with the caution they deserve.

Riding for

same window · biggest samples first
Main yardMel Brittain
23% of all rides
8.6% SR · A/E 1.42
TrainerRWSR£1
Mel Brittain 81 7 8.6% −10.50
Bryan Smart 33 1 3% −7.00
Muted rows are under 30 rides and sit behind "Show all".

Career highlights

lifetime archive, 2005→
22
Archived wins
£142k
Prize money
2005
Best season · 15 wins
In our archive from its very first year (2005), so this career almost certainly began earlier than our record does. The figures above count 2005 onwards only — what the archive holds, not a full-career total. On this page the header statistics and this card both count from the archive floor (2005), so they agree.
Bond Boy (GB) — VC Bet Scottish Sprint Cup Heritage Handicap Musselburgh · May 2005 · Class 2
£34,800
Rancho Cucamonga (IRE) — Harry Kennedy Memorial E.B.F. Fillies' Handicap Ayr · Jul 2005 · Class 4
£7,438
Imperial Lucky (IRE) — Go Racing At York This Friday Fillies' Nursery Handicap Catterick · Oct 2005 · Class 4
£7,066
Notable horses
Guadaloup (GB) Imperial Lucky (IRE) Qaasi (USA) Dispol Shabama (GB) Bond Boy (GB) Steel Grey (GB)

Sires of the horses ridden

progeny record · win % by ground and trip
Bahamian Bounty (GB) 21.4% · 3–14
Progeny have won 9.4% of 10,803 runs since 2005 (673 horses). Weakest over 1m5f – 2m (all codes): 0.8% from 251.
Forzando (GB) 0% · 0–13
Progeny have won 5.3% of 1,314 runs since 2005 (104 horses).
Loup Sauvage (USA) 18.2% · 2–11
Progeny have won 6.3% of 606 runs since 2005 (85 horses).
Piccolo (GB) 10% · 1–10
Progeny have won 7.9% of 9,146 runs since 2005 (498 horses). Weakest over 1m5f – 2m (all codes): 3.3% from 367.
Grey Desire (GB) 11.1% · 1–9
Progeny have won 1.6% of 61 runs since 2005 (9 horses).
Lujain (USA) 0% · 0–7
Progeny have won 7.9% of 3,111 runs since 2005 (179 horses). Weakest on Soft going: 4.4% from 205. Weakest over 1m5f – 2m (all codes): 4.1% from 145.
Top line: the rider'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 2005, 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 345 · newest first

The latest 50 of 345 archived rides, newest first. The full record runs from 26 February 2005 to 14 July 2007.

DateCourseHorseRaceFinishSP
14 Jul 07 Hamilton Storm Mission (USA)T: John Mackie Hamilton Park HandicapClass 6 · 8.5f · Soft · 10 ran 6th 11/1
14 Jul 07 Hamilton Celeb Style (IRE)T: David Nicholls Sunday Mail Median Auction Maiden StakesClass 5 · 5f · Soft · 9 ran 5th 8/1
13 Jul 07 York Flop (IRE)T: Mel Brittain Hovis Maiden StakesClass 3 · 7f · Soft · 10 ran 6th 16/1
04 Jul 07 Catterick Kingstyle (IRE)T: Mel Brittain E.B.F. Zetland Median Auction Maiden Stakes (Div 2)Class 5 · 7f · Good To Soft · 10 ran 6th 66/1
03 Jul 07 Thirsk Guadaloup (GB)T: Mel Brittain Rectangle HandicapClass 6 · 8f · Soft · 12 ran 9th 9/1
03 Jul 07 Thirsk Straight (IRE)T: Mel Brittain House Designer Wear Maiden StakesClass 5 · 6f · Soft · 13 ran 6th 66/1
28 Jun 07 Newcastle Big Slick (IRE)T: Mel Brittain Guinness Maiden Auction StakesClass 5 · 6f · Soft · 15 ran 9th 50/1
25 Jun 07 Musselburgh Passionately Royal (GB)T: Mel Brittain Turftv.co.uk Classified StakesClass 7 · 8f · Good To Soft · 14 ran 14th 33/1
25 Jun 07 Musselburgh Guadaloup (GB)T: Mel Brittain Turftv HandicapClass 6 · 7f · Good To Soft · 12 ran 1st 6/1
25 Jun 07 Musselburgh Caprima (IRE)T: Mel Brittain Racing UK Channel 432 Median Auction Maiden StakesClass 6 · 5f · Good To Soft · 7 ran 5th 14/1
23 Jun 07 Redcar Celeb Style (IRE)T: David Nicholls Market Cross Jewellers Maiden StakesClass 5 · 6f · Soft · 10 ran 3rd 8/1
23 Jun 07 Redcar Wavertree One Off (GB)T: John Ryan SGW Construction Group Ltd Abigail HandicapClass 6 · 14f · Soft · 14 ran 8th 80/1
23 Jun 07 Redcar Mujinda (GB)T: Mel Brittain Gisborough Hall Hotel Maiden Stakes (Div 1)Class 5 · 7f · Soft · 11 ran 11th 50/1
22 Jun 07 Ayr City Miss (GB)T: Linda Perratt Ayr Rugby Club 110 Years HandicapClass 6 · 9f · Good · 9 ran 7th 66/1
22 Jun 07 Ayr Bahamian Gift (GB)T: Mel Brittain Arnold Clark Maiden Auction StakesClass 5 · 6f · Good · 7 ran 1st 16/1
22 Jun 07 Ayr Invincible Rose (IRE)T: Mel Brittain Park's Maiden Auction StakesClass 5 · 5f · Good · 7 ran 5th 22/1
21 Jun 07 Beverley Bahamian Bay (GB)T: Mel Brittain Book Tickets At beverley-racecourse.co.uk Classified StakesClass 7 · 5f · Good To Soft · 14 ran 14th 11/1
21 Jun 07 Ripon Zap Attack (GB)T: Mel Brittain Go Racing In Yorkshire Claiming StakesClass 5 · 6f · Soft · 8 ran 6th 50/1
21 Jun 07 Ripon Big Slick (IRE)T: Mel Brittain E.B.F. Ingham Underwriting Maiden Stakes (Div 2)Class 5 · 6f · Soft · 9 ran 9th 33/1
21 Jun 07 Ripon Sandies Choice (GB)T: Mel Brittain E.B.F. Ingham Underwriting Maiden Stakes (Div 1)Class 5 · 6f · Soft · 9 ran 9th 100/1

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 Dean Mernagh's strike rate?
Dean Mernagh has won 22 of 345 rides between 2005 and 2007, a strike rate of 6.4% (as at 6 November 2026). Figures are computed from our own results archive. Our archive begins in 2005, so anything earlier is not counted.
Which course does Dean Mernagh do best at?
Southwell (AW) by strike rate: 5 wins from 49 rides (10.2%) between 2005 and 2007. Read from the 15 courses with the most rides 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.
Which yard does Dean Mernagh ride most for?
Mel Brittain, with 81 rides between 2005 and 2007 — 23% of the total. That pairing has won 7 (8.6%).
What is Dean Mernagh's Fair A/E?
1.22, from 341 rides with a computed fair probability between 2005 and 2007. 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). This profile has no runs from 2008, so every figure on this page counts from the start of the archive instead.