Ross O'Sullivan
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 140 runners a season, across both codes, winning with 8% of them — a touch below the margin-free market read across the lifetime window (Fair A/E 0.94). The yard is quiet just now — 1 winner in the last fortnight, below its own baseline.
The record is strongest at Killarney (13.3%, n=75), clear of the yard's 7.7% baseline. Debutants struggle at 1.6% (n=188, Fair A/E 0.51). The market has consistently overbet horses returning fresh after 61+ days: 4.9% strike, Fair A/E 0.68 and −165.52 to a £1 stake over 526 runners — those runners underperform what the price implies. Right now the yard is in a quiet spell: 1 from 24 runners in the last 14 days (4.2%, 3.5pts below the 7.7% baseline). Tom Harney rides 7% of the entries and matches the yard's average almost exactly (9.6%, A/E 1.12) — the partnership beats the margin-free market read. 8 Group and Graded wins sit in the archive record — the biggest prize the yard has landed: the Friends Of The Curragh Irish Cesarewitch at Curragh (IRE) (Sep 2026, £275,000). The stable star of the record: Samrogue (IRE) — 7 wins from 40 runs for the yard. Seasonally, the yard fires Jun–Jul.
Yard patterns
the angles behind the record · vs 7.7% baselineEach tile is the record in that situation vs the 7.7% 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
Quiet spellWhen the yard fires
strike by month, lifetimeJockey 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 2,734 · newest firstThe latest 50 of 2,734 archived runners, newest first. The full record runs from 6 May 2011 to 26 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 Ross O'Sullivan's strike rate?
- Ross O'Sullivan has won 211 of 2,734 runners since 2008, a strike rate of 7.7% (as at 27 October 2026). Figures are computed from our own results archive.
- Which course does Ross O'Sullivan do best at?
- Killarney by strike rate: 10 wins from 75 runners (13.3%) since 2008. 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 Ross O'Sullivan?
- Tom Harney, with 187 runners since 2008 — 7% of the total. That pairing has won 18 (9.6%).
- Is Ross O'Sullivan in form?
- In the last 14 days: 24 runners, 1 winner, a strike rate of 4.2%. That is below the baseline of 7.7% since 2008.
- What is Ross O'Sullivan's Fair A/E?
- 0.94, from 2,733 runners with a computed fair probability since 2008. 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.