Christopher Mason
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 70 runners a season, almost all on the flat, winning with 16% of them — beating the margin-free market read across five seasons (Fair A/E 1.38). With a claiming rider up the record reads 17% (152 runs).
The record is strongest at Chepstow (20.8%, n=77), clear of the yard's 15.6% baseline. Runners with a claiming rider up are the standout value angle: 17.1% strikes only just above baseline, but Fair A/E 1.58 and +33.50 to a £1 stake over 152 runners — a record the market has persistently underpriced. Gina Mangan rides 62% of the entries and edges the yard's average (17.8% vs 15.6%, A/E 1.51) — the partnership beats the margin-free market read. The yard also reads well off a 8-14-day break (22.9%, n=83). The record reads poorly off a 31-60-day break — 7.9% over 63 runners, 7.7pts below the baseline. The stable star of the record: Gilt Edge (GB) — 10 wins from 63 runs for the yard.
Yard patterns
the angles behind the record · vs 15.6% baselineEach tile is the record in that situation vs the 15.6% 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 headerGoing
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
Small sampleWhen the yard fires
strike by month, 5 seasonsJockey bookings
same window · biggest samples firstCareer highlights
lifetime archive, 2011→Sires in the string
progeny record · win % by ground and tripThe record
latest 50 of 785 · newest firstThe latest 50 of 785 archived runners, newest first. The full record runs from 2 June 2011 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 Christopher Mason's strike rate?
- Christopher Mason has won 58 of 372 runners since 2022, a strike rate of 15.6% (as at 20 October 2026). Figures are computed from our own results archive.
- Which course does Christopher Mason do best at?
- Chepstow by strike rate: 16 wins from 77 runners (20.8%) 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 Christopher Mason?
- Gina Mangan, with 230 runners since 2022 — 62% of the total. That pairing has won 41 (17.8%).
- Is Christopher Mason in form?
- Too few runners in the last 14 days to read — 3 runners, which is not a sample we will draw a conclusion from.
- What is Christopher Mason's Fair A/E?
- 1.38, from 370 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.