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Trainer profile

Niels Petersen

8 runners in the last 5 seasons · 5 individual horses
As at 22 Oct 2026 · KTB archive: 2005–present, updated daily
Last runner 82 days ago 100% of runners on the flat
from 1 Jan 2022
1–8
Wins / Runs
12.5%
Strike rate
n=8
1 (13%)
Placed
0.00
n=6 · 0.00 incl. margin
−6.00
£1 level stake
n=6 at SP · −100.0%
£37,519
Prize money (window)
Strike by season
16.7%

Small sample — fewer than 30 runs in this window. Read the Ns before the percentages.

Yard patterns

the angles behind the record · vs 12.5% baseline
Fresh · 61+ days off
33.3%+20.8
n=3 · A/E 0.00 · £1 −2.00
New recruits · first run for the yard
50%+37.5
n=2 · A/E 0.00 · £1 −1.00
Debutants · first career start
0%−12.5
n=3 · A/E 0.00 · £1 −2.00
First-time headgear · true-first definition
0%−12.5
n=2 · A/E 0.00 · £1 −2.00
Group / Graded races · pattern & listed
50%+37.5
n=2 · A/E — · £1 —

Each tile is the record in that situation vs the 12.5% baseline — descriptive splits with the sample always shown, not tips. 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.

Record by conditions

same window as header

Going

GoingRWSR£1
Good to Firm 5 0 0% −5.00
Good 2 1 50% —
Heavy 1 0 0% −1.00

Courses

CourseRWSR£1
Ascot 3 0 0% −3.00
Goodwood 3 0 0% −3.00
Bro Park (SWE) 2 1 50% —

Class

ClassRWSR£1
Class 2 3 0 0% −3.00
Class 3 3 0 0% −3.00
Class 1 2 1 50% —

Market position

In the bettingRWSRA/E£1
7th+ in betting 6 0 0% 0.00 −6.00
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
War Socks (GB) 3 0 0 17 Jun 26
Rock Of Cashel (IRE)from A P O'Brien 2 0 0 1 Aug 26
Hunters Lullaby (IRE) 1 0 0 29 Jul 26
Wassim (DEN) 1 0 0 28 Jun 26
Mount Kilimanjaro (FR)from A P O'Brien 1 1 1 14 Jun 26
All 5 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 5 horses listed, 2 arrived from another yard in our archive, most often from A P O'Brien (2); 3 had their first archived run for this yard.

None of them has a 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.

Jockey bookings

same window · biggest samples first
RiderRWSR£1
Carlos Lopez 2 1 50% —
Jamie Spencer 2 0 0% −2.00
Silvestre De Sousa 1 0 0% −1.00
William Buick 1 0 0% −1.00
Elione Chaves 1 0 0% −1.00
David Egan 1 0 0% −1.00
Muted rows are under 30 rides.

Career highlights

lifetime archive, 2017→
1
Archived wins
1
Pattern / graded wins
£42,818
Prize money
2026
Best season · 1 win
Mount Kilimanjaro (FR) — Stockholms Stora Pris (Turf) Bro Park (SWE) · Jun 2026 · Group 3
£34,247
Notable horses

Sires in the string

progeny record · win % by ground and trip
Kameko (USA) 0% · 0–3
Progeny have won 9.8% of 981 runs since 2008 (133 horses).
Wootton Bassett (GB) 0% · 0–2
Progeny have won 13.1% of 5,640 runs since 2008 (788 horses). Strongest at trips under 6f (all codes): 16.1% from 161.
Progeny have won 10.2% of 12,783 runs since 2008 (936 horses). Weakest over 2m1f – 2m4f (all codes): 6.9% from 320.
Siyouni (FR) 100% · 1–1
Progeny have won 13% of 8,322 runs since 2008 (975 horses). Weakest on Heavy going: 9.3% from 454.
Zarak (FR) 0% · 0–1
Progeny have won 15.4% of 1,974 runs since 2008 (327 horses). Weakest on Standard (AW) going: 11% from 364. Strongest over 1m5f – 2m (all codes): 21% from 243. Weakest over 6f – 7f (all codes): 7% from 201.
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 22 Oct 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

all 11 archived runs · newest first

Every one of Niels Petersen's 11 archived runners, from 19 April 2017 to 1 August 2026, newest first — one winner among them.

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 Niels Petersen's strike rate?
Niels Petersen has won 1 of 8 runners since 2022, a strike rate of 12.5% (as at 22 October 2026). Figures are computed from our own results archive. A small sample — fewer than 30 runners, so read the count before the percentage.
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 22 October 2026, computed from our own results archive (2005 onwards; aggregates from 2008).