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David Killahena & Graeme McPherson

Two years into their training career and David Killahena and Graeme McPherson have already done something most yards spend a decade chasing — they've won at the top level of the sport, not once but three times. A Class 1 victory at Carlisle in November 2024 was followed by another at Doncaster in January 2025 and then a third at Cheltenham in November 2025. Cheltenham is the most revered jumping venue in Britain and Ireland, the kind of place where reputations are made, and getting a winner there in only your second year of training is a serious statement.Based on TrackLab's AI analysis
Quick Facts
Role
Trainer
Based
Stow-on-the-Wold, Gloucs
Record
18 wins from 144 races
Win rate
12.5%
Top jockey
Nick Slatter
Best course
Southwell (0% from 14 races)
Best going
Standard to slow

📊 Key Numbers

A snapshot of this trainer's performance over the last 12 months
144
Races
18
Wins
12.5%
Win rate
avg ~10%
33.3%
Place rate (top 3)
avg ~30%

🔍 Full Analysis

TrackLab's AI-generated assessment based on career data and recent form
TrackLab's Trainer Breakdown
Auto-Generated

Their overall record tells a story of a yard still finding its feet but already punching above its weight. Across their career they have trained 58 winners in total, and over the last 12 months they have sent out 144 runners and won with 18 of them — roughly 1 in every 8. That 12% win rate is a slight dip from 17% the previous season, which is worth keeping an eye on, though it is not unusual for a young operation to fluctuate as it grows and takes on more horses at different levels.

One detail that stands out is their record on wet, muddy ground. With only 4 runners in those conditions they have won twice — a 50% conversion rate that is almost certainly too small a sample to draw firm conclusions from, but it does suggest their horses may be well-suited when the ground is testing. That is a useful weapon heading into the winter months.

Their most reliable partnership in the saddle is with jockey Nick Slatter, who has ridden 48 times for the yard and won 6 of those — also around 1 in every 8. That consistency across a reasonable number of rides suggests a genuine working relationship rather than a one-off combination, and when Slatter is booked for a Killahena and McPherson runner it is a combination worth paying attention to.

What makes this yard genuinely interesting is the speed of their rise. Three top-level wins from a standing start, including at Cheltenham, inside 24 months is not a slow build — it is an arrival. The win rate may have softened slightly this season, but the ceiling this team has already shown exists is higher than most new yards ever reach.

📈 Form Trend

How this trainer's win rate has changed month by month
Monthly win rate
2025–2026
23.1%
May
0%
Jun
0%
Jul
0%
Aug
0%
Sep
13.3%
Oct
15.8%
Nov
13.3%
Dec
15.4%
Jan
7.7%
Feb
11.8%
Mar
0%
Apr

🎯 Where This Trainer Thrives

Performance broken down by ground, class, and track type
🌧 Ground Conditions
Standard to slow
Loves
Good to firm
Loves
Good to soft
Soft (muddy)
Good (firm-ish)
Ok
Standard (all-weather)
Avoids
Heavy (very wet)
Avoids
🏅 Competition Level
Class 1
Class 2
Avoids
Class 3
Loves
Class 4
Ok
Class 5
Ok
Class 6
🏟 Track Shape
Right-handed, wide and galloping
Loves
Left-handed, undulating
Loves
Left-handed, tight turning
Right-handed, undulating
Right-handed, tight turning
Wide and galloping
Ok
Left-handed, wide and galloping
Avoids
Left-handed, tight
Avoids

🏇 Jockey Partnerships

The riders they work with most, sorted by rides together
Nick Slatter First Choice
12.5%
Win rate
6/48
Won / Rode
17.5%
Win rate
7/40
Won / Rode
23.1%
Win rate
3/13
Won / Rode
11.1%
Win rate
1/9
Won / Rode
Oscar Palmer
0%
Win rate
0/6
Won / Rode
0%
Win rate
0/3
Won / Rode
0%
Win rate
0/3
Won / Rode
50%
Win rate
1/2
Won / Rode
0%
Win rate
0/2
Won / Rode
0%
Win rate
0/2
Won / Rode
0%
Win rate
0/1
Won / Rode
0%
Win rate
0/1
Won / Rode
0%
Win rate
0/1
Won / Rode
0%
Win rate
0/1
Won / Rode
Mr Tommie M O'Brien(3)
0%
Win rate
0/1
Won / Rode
0%
Win rate
0/1
Won / Rode
0%
Win rate
0/1
Won / Rode
0%
Win rate
0/1
Won / Rode
0%
Win rate
0/1
Won / Rode
0%
Win rate
0/1
Won / Rode

Top Horses

The strongest horses currently associated with this trainer
Form: 2
Form: 587-83
Form: -21726
Form: 1-
Form: P51-73
Form: /76-08
Form: 344F53
Form: 4-1136
Form: 07-157
Form: 31/F-P

🏟 Course Record

Win rate at each course, sorted by number of races
CourseRacesWinsWin rate
Southwell 14 0 0%
Wolverhampton 13 0 0%
Lingfield Park 9 2 22.2%
Uttoxeter 7 1 14.3%
hereford 7 0 0%
Stratford-on-Avon 7 0 0%
Warwick 6 1 16.7%
Ffos Las 6 0 0%
Worcester 6 0 0%
Kempton Park 5 2 40%
Chepstow 5 1 20%
Huntingdon 5 0 0%
Market Rasen 5 0 0%
Doncaster 5 0 0%
Ayr 4 1 25%
Hexham 3 2 66.7%
Cheltenham 3 1 33.3%
Wetherby 3 1 33.3%
Exeter 3 0 0%
chelmsford 2 1 50%
Ascot 2 1 50%
Bangor-on-Dee 2 1 50%
Sedgefield 2 0 0%
Aintree 2 0 0%
Goodwood 2 0 0%
Newton Abbot 2 0 0%
Fakenham 2 0 0%
Haydock Park 2 0 0%
Carlisle 1 1 100%
Brighton 1 1 100%
Leicester 1 1 100%
Kelso 1 0 0%
Wincanton 1 0 0%
Nottingham 1 0 0%
Cartmel 1 0 0%
Perth 1 0 0%
Newbury 1 0 0%
Taunton 1 0 0%

📅 Recent Results

The last 20 results, most recent first
4 Apr
Wolverhampton · 1m1f – 1m2f · Standard
8th
4 Apr
Wolverhampton · 1m1f – 1m2f · Standard
6th
3 Apr
Lingfield Park · 1m6f – 2m · Standard
6th
1 Apr
Southwell · 1m6f – 2m · Good
8th
28 Mar
Uttoxeter · Long Distance (2m+) · Good_To_Soft
Won
24 Mar
Southwell · Long Distance (2m+) · Good
10th
21 Mar
Newbury · Long Distance (2m+) · Good_To_Soft
12th
21 Mar
Kelso · Long Distance (2m+) · Good_To_Soft
5th
18 Mar
Kempton Park · 1m3f – 1m4f · Standard_To_Slow
Won
15 Mar
Chepstow · Long Distance (2m+) · Soft
8th
14 Mar
Uttoxeter · 1m6f – 2m · Soft
5th
13 Mar
Doncaster · Long Distance (2m+) · Good_To_Soft
11 Mar
Huntingdon · 1m6f – 2m · Good
6th
10 Mar
Wolverhampton · 1m1f – 1m2f · Standard
8th
10 Mar
Wolverhampton · 1m1f – 1m2f · Standard
8th
7 Mar
hereford · Long Distance (2m+) · Good
14th
5 Mar
Haydock Park · Long Distance (2m+) · Good_To_Soft
4 Mar
Kempton Park · 1m3f – 1m4f · Standard_To_Slow
7th
2 Mar
Southwell · Long Distance (2m+) · Soft
2nd
1 Mar
Ffos Las · Long Distance (2m+) · Heavy
4th