Jonathan Portman
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%".
Sends out around 280 runners a season, almost all on the flat, winning with 11% of them — beating the margin-free market read across five seasons (Fair A/E 1.04). In Group and Graded company the record reads 15% (33 runs).
The record is strongest at Southwell (AW) (18.2%, n=55) and Nottingham (17.9%, n=39) — all clear of the yard's 10.7% baseline. In Group and Graded company the record reads well at 15.2% (n=33, Fair A/E 1.87), but debutants struggle at 2% (n=99, Fair A/E 0.62). Horses returning fresh after 61+ days are the standout value angle: 11.9% strikes only just above baseline, but Fair A/E 1.51 and +36.58 to a £1 stake over 168 runners — a record the market has persistently underpriced. Rob Hornby rides 40% of the entries and matches the yard's average almost exactly (10.8%, A/E 1.07) — the partnership beats the margin-free market read. The record reads poorly in Class 3 — 1.5% over 68 runners, 9.2pts below the baseline. 11 Group and Graded wins sit in the archive record — the biggest prize the yard has landed: the Weatherbys Super Sprint at Newbury (Jul 2016, £122,925). The stable star of the record: Russian Rumour (IRE) — 10 wins from 63 runs for the yard. Seasonally, the yard fires Apr–May.
Yard patterns
the angles behind the record · vs 10.7% baselineEach tile is the record in that situation vs the 10.7% 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.
Notable angles
vs their own baselineRecord by conditions
same window as headerRace type
Going
Courses
Class
Market position
Distance
By season
Handicaps
Field size
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 firstCurrent form
significance-gatedLast 14 days
SteadyWhen the yard fires
strike by month, 5 seasonsJockey bookings
same window · biggest samples firstCareer highlights
lifetime archive, 2005→Sires in the string
progeny record · win % by ground and tripThe record
latest 50 of 5,316 · newest firstThe latest 50 of 5,316 archived runners, newest first. The full record runs from 3 January 2005 to 19 October 2026.
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 Jonathan Portman's strike rate?
- Jonathan Portman has won 148 of 1,387 runners since 2022, a strike rate of 10.7% (as at 20 October 2026). Figures are computed from our own results archive.
- Which course does Jonathan Portman do best at?
- Southwell (AW) by strike rate: 10 wins from 55 runners (18.2%) 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.
- Who rides most for Jonathan Portman?
- Rob Hornby, with 555 runners since 2022 — 40% of the total. That pairing has won 60 (10.8%).
- Is Jonathan Portman in form?
- In the last 14 days: 17 runners, 2 winners, a strike rate of 11.8%. That is in line with the baseline of 10.7% since 2022.
- What is Jonathan Portman's Fair A/E?
- 1.04, from 1,382 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.