What is Donnacha O'Brien's strike rate?

Donnacha O'Brien has won 400 of 2,030 rides since 2008, a strike rate of 19.7% (as at 6 November 2026). Figures are computed from our own results archive.

Which course does Donnacha O'Brien do best at?

Tipperary by strike rate: 19 wins from 66 rides (28.8%) since 2008. Read from the 15 courses with the most rides 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.

Which yard does Donnacha O'Brien ride most for?

A P O'Brien, with 994 rides since 2008 — 49% of the total. That pairing has won 245 (24.6%).

What is Donnacha O'Brien's Fair A/E?

1.11, from 2,025 rides 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.

Jockey profile

Donnacha O'Brien

2,030 rides in the lifetime window · 767 individual horses

As at 6 Nov 2026 · KTB archive: 2005–present, updated daily

Last ride Nov 2019 100% of rides on the flat

Last 5 seasons Lifetime (2014→)

No rides in the last 5 seasons — showing the lifetime record, from 1 Jan 2008 — the aggregate floor: every horse in the window has a complete captured career behind it.

400–2,030

Wins / Runs

19.7%

Strike rate

n=2,030

903 (45%)

Placed

1.11

Fair A/E

n=2,025 · 0.91 incl. margin

−388.11

£1 level stake

n=2,030 at SP · −19.1%

£14.7m

Prize money (window)

Strike by season

21.7%

KTB Rider Profile

Rode around 340 times a season, almost all on the flat, winning on 20% of them — beating the margin-free market read across the lifetime window (Fair A/E 1.11). Riding last-time-out winners the record reads 23% (298 rides). Rode mostly for A P O'Brien — 49% of rides in the window.

Deterministic profile computed from 2,030 archived runs (lifetime window) · updated 6 Nov 2026

KTB at a glance Fired Jul–Aug 42% when favourite A P O'Brien: 24.6% from 994 LTO winners: 22.8% Rode the favourite in 26% of races

The read

The record is strongest at Tipperary (28.8%, n=66), clear of the rider's 19.7% baseline. It is weakest at Ascot (3.1% over 64 rides) — the widest gap in the record. Rides on last-time-out winners have been a positive signal at 22.8% (n=298, Fair A/E 1.14), but in Group and Graded company the record reads poorly at 13.9% (n=431, Fair A/E 0.98). A P O'Brien supplied 49% of the rides and edges the rider's average (24.6% vs 19.7%, A/E 1.15) — the partnership beats the margin-free market read. The record read poorly off a 61-180-day break — 12.1% over 173 rides, 7.6pts below the baseline. 60 Group and Graded wins sit in the archive record — the biggest prize the rider has landed: the Dubai Duty Free Irish Derby at Curragh (Jun 2018, £855,000). The standout partner of the record was Waitingfortheday (IRE) — 6 wins from 13 rides together. Seasonally, the rider fired Jul–Aug.

Written from the figures on this page — every claim carries its sample. Descriptive, not a tip.

Riding patterns

the angles behind the record · vs 19.7% baseline

First ride on the horse · first captured pairing

18.1%−1.6

n=767 · A/E 1.04 · £1 −186.56

Last-time-out winners · previous run was a win

22.8%+3.1

n=298 · A/E 1.14 · £1 −40.51

Fresh horses · 61+ days off

14.5%−5.2

n=262 · A/E 0.89 · £1 −89.54

When favourite

42%

n=528 · A/E 1.22 · £1 −1.63

Claiming rides · riding with a claim

15.2%−4.5

n=571 · A/E 0.98 · £1 −135.54

Big fields · 14+ runners

15.6%−4.1

n=720 · A/E 1.22 · £1 −165.43

Group / Graded races · pattern & listed

13.9%−5.8

n=431 · A/E 0.98 · £1 −129.67

Each tile is the record in that situation vs the 19.7% baseline — descriptive splits with the sample always shown, for you to weigh. Tiles under 30 runs render muted. First rides are the first captured pairing of horse and rider; last-time-out winners are horses whose previous captured run was a win; claiming rides are runs where the rider carried a weight claim. Group / Graded covers pattern and listed races.

Notable angles

vs their own baseline

At Ascot 3.1% vs 19.7% · n=64

With horses switching code 9.1% vs 19.7% · n=44

Off a 61-180-day break 12.1% vs 19.7% · n=173

At Tipperary 28.8% vs 19.7% · n=66

In Class 1 13.9% vs 19.7% · n=432

In Group / Graded races 13.9% vs 19.7% · n=431

Descriptive splits ranked by divergence × sample — insight, not instruction. Every angle carries its N; nothing under 30 runs qualifies. Rows within 2pts of the baseline appear only when the market-relative read (Fair A/E) diverges, and show it.

Record by conditions

same window as header

Race type

TypeRWSR£1

Flat 2,029 400 19.7% −387.11

NH Flat 1 0 0% −1.00

Going

GoingRWSR£1

Good 466 99 21.2% −80.12

Soft 433 69 15.9% −79.99

Standard (AW) 406 81 20% −60.93

Good to Firm 368 72 19.6% −133.30

Heavy 180 39 21.7% −10.56

Good to Soft 177 40 22.6% −23.21

Courses

CourseRWSR£1

Dundalk (AW) 401 78 19.5% −65.49

Curragh 311 57 18.3% −16.14

Leopardstown 202 40 19.8% −38.10

Naas 151 38 25.2% −2.44

Gowran Park 119 26 21.8% −23.51

Navan 117 20 17.1% −46.07

Galway 94 21 22.3% −26.30

Cork 82 13 15.9% −14.73

Tipperary 66 19 28.8% +0.43

Ascot 64 2 3.1% −57.50

Killarney 57 9 15.8% −25.40

Roscommon 55 10 18.2% −18.89

Fairyhouse 51 10 19.6% −17.98

Limerick 45 11 24.4% +0.35

Newmarket 31 6 19.4% +1.12

Class

ClassRWSR£1

Class 1 432 60 13.9% −130.67

Class 2 23 1 4.3% −21.56

Class 5 5 2 40% +3.12

Class 4 2 0 0% −2.00

Class 3 1 0 0% −1.00

Market position

In the bettingRWSRA/E£1

Favourite 603 244 40.5% 1.24 +7.74

2nd–3rd fav 659 111 16.8% 1.00 −113.35

4th–6th fav 501 40 8% 0.95 −119.50

7th+ in betting 267 5 1.9% 0.46 −163.00

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 ridden

same window as header · most-raced first

HorseRWPlLast ran

Jaqen H'Ghar (IRE) 18 3 7 29 Sep 17

Song Of Love (IRE) 16 2 6 20 Jan 17

Sea of Blue (IRE) 14 1 4 7 Apr 17

Waitingfortheday (IRE) 13 6 11 29 Aug 19

Royal Court (IRE) 13 0 7 5 Jul 19

Cradle Mountain (IRE) 13 2 5 29 Oct 16

Speak In Colours (GB) 12 2 5 19 Oct 19

Clear Skies (GB) 12 3 5 16 Sep 18

Latrobe (IRE) 11 3 8 15 Sep 19

Apparition (IRE) 11 1 3 7 Sep 18

Burren View Lady (IRE) 11 1 2 19 May 17

Udogo (GB) 11 1 5 7 Apr 17

Showing the 60 most-raced of the 767 horses ridden in this window — each ran at least 6 times. Horses with fewer runs aren't listed; search finds any horse since 2005. 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.

By month

strike by month, lifetime

JFMAMJJASOND

231718201719212120201319

A flat rider: the season runs Mar–Oct. Muted months are small samples (under 30 runs) — read them with the caution they deserve.

Riding for

same window · biggest samples first

Main yardA P O'Brien

49% of all rides
24.6% SR · A/E 1.15

TrainerRWSR£1

A P O'Brien 994 245 24.6% −161.83

Joseph Patrick O'Brien 753 135 17.9% −86.92

Muted rows are under 30 rides and sit behind "Show all".

Career highlights

lifetime archive, 2014→

400

Archived wins

Pattern / graded wins

£14.7m

Prize money

2018

Best season · 124 wins

Latrobe (IRE) — Dubai Duty Free Irish Derby (Group 1) Curragh · Jun 2018 · Group 1

£855,000

Magical (IRE) — Qipco Champion Stakes (Group 1) (British Champions Middle Distance) Ascot · Oct 2019 · Group 1

£770,547

Magna Grecia (IRE) — Qipco 2000 Guineas Stakes (Group 1) Newmarket · May 2019 · Group 1

£297,019

Notable horses

Waitingfortheday (IRE) Downdraft (IRE) Split The Atom (IRE) Astronomer (IRE) Jaqen H'ghar (IRE) Clear Skies (GB)

Sires of the horses ridden

progeny record · win % by ground and trip

Galileo (IRE) 27% · 114–422

Progeny have won 14.5% of 18,201 runs since 2008 (1,776 horses). Strongest over 6f – 7f (all codes): 18.2% from 1,383. Weakest over 2m5f – 3m (all codes): 9.4% from 890.

War Front (USA) 23.1% · 33–143

Progeny have won 15.7% of 2,499 runs since 2010 (297 horses). Strongest on Standard (AW) going: 18.8% from 925. Weakest on Good going: 10.9% from 533. Strongest over 6f – 7f (all codes): 19.3% from 1,010.

Fastnet Rock (AUS) 12.1% · 17–140

Progeny have won 12.1% of 5,486 runs since 2013 (557 horses).

Camelot (GB) 28.2% · 24–85

Progeny have won 11.7% of 7,727 runs since 2017 (761 horses).

Zoffany (IRE) 11.1% · 7–63

Progeny have won 9.9% of 10,779 runs since 2015 (799 horses).

Australia (GB) 16.7% · 8–48

Progeny have won 11.2% of 5,676 runs since 2018 (566 horses). Weakest over 2m5f – 3m (all codes): 6.5% from 108.

Top line: the rider'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 6 Nov 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

latest 50 of 2,030 · newest first

The latest 50 of 2,030 archived rides, newest first. The full record runs from 23 July 2014 to 3 November 2019.

DateCourseHorseRaceFinishSP

03 Nov 19 Naas Perfect Tapatino (FR)T: Joseph Patrick O'Brien Finale Stakes (Listed)12f · Heavy · 10 ran 4th 13/2

03 Nov 19 Naas Stratum (GB)T: W P Mullins Daragh Fitzpatrick & Colm White Local Bookmakers November Handicap14f · Heavy · 16 ran 10th 7/1

03 Nov 19 Naas Gentile Bellini (GB)T: A P O'Brien Naas Nursery Of Champions Handicap10f · Heavy · 14 ran 5th 15/8F

03 Nov 19 Naas Love Locket (IRE)T: A P O'Brien Membership At Naas Nursery7f · Heavy · 8 ran 2nd 2/1F

03 Nov 19 Naas Nobel Prize (IRE)T: A P O'Brien Irish Stallion Farms EBF Maiden8f · Heavy · 17 ran 1st 6/4J

03 Nov 19 Naas Fame And Acclaim (IRE)T: Joseph Patrick O'Brien Irish Stallion Farms EBF Maiden6f · Heavy · 22 ran 8th 4/1F

02 Nov 19 Chelmsford City (AW) Western Australia (IRE)T: A P O'Brien Bet Toteswinger At Totesport.com HandicapClass 2 · 14f · Standard · 9 ran 8th 6/1

02 Nov 19 Chelmsford City (AW) Persia (IRE)T: A P O'Brien Bet totequadpot At totesport.com Conditions Stakes (Plus 10)Class 2 · 10f · Standard · 4 ran 1st 4/9F

02 Nov 19 Chelmsford City (AW) Battle Of Liege (USA)T: A P O'Brien Bet Toteexacta At Totesport.com Novice StakesClass 5 · 7f · Standard · 9 ran 1st 9/2

02 Nov 19 Newmarket Peaceful (IRE)T: A P O'Brien British Stallion Studs EBF Montrose Fillies' Stakes (Listed)Class 1 · 8f · Heavy · 7 ran 2nd 3/1F

02 Nov 19 Newmarket San Pedro (IRE)T: A P O'Brien Heath Court Hotel Horris Hill Stakes (Group 3)Class 1 · 7f · Heavy · 11 ran 10th 11/4F

02 Nov 19 Newmarket Grenadine (IRE)T: A P O'Brien Prestige Vehicles British EBF Fillies' Novice Stakes (Plus 10) (Div 1)Class 4 · 7f · Soft · 14 ran 6th 6/1

01 Nov 19 Newcastle (AW) Mogul (GB)T: A P O'Brien Vertem Futurity Trophy Stakes (Group 1)Class 1 · 8f · Standard · 11 ran 4th 7/2

30 Oct 19 Dundalk (AW) Vatican City (IRE)T: A P O'Brien Irish Stallion Farms EBF Maiden (Plus 10)7f · Standard · 14 ran 1st 1/2F

30 Oct 19 Dundalk (AW) Beckwith Place (IRE)T: Tracey Collins Book Your Christmas Party At Dundalk Handicap8f · Standard · 14 ran 12th 12/1

30 Oct 19 Dundalk (AW) Munaajaat (IRE)T: Joseph Patrick O'Brien Irishinjuredjockeys.com Handicap (45-70)8f · Standard · 14 ran 3rd 13/2

30 Oct 19 Dundalk (AW) Equitant (GB)T: Joseph Patrick O'Brien Dundalk Stadium Claiming Race8f · Standard · 9 ran 7th 6/1

30 Oct 19 Dundalk (AW) Yale (USA)T: A P O'Brien Floodlit Friday Nights At Dundalk Maiden5f · Standard · 8 ran 1st 2/7F

28 Oct 19 Galway Grace To Grace (IRE)T: Joseph Patrick O'Brien Reaney's Of Galway Supporting NUIG Volunteer Services Abroad Handicap (45-65) (Div 2)12f · Soft To Heavy · 15 ran 1st 4/1

28 Oct 19 Galway Ozone (IRE)T: Joseph Patrick O'Brien Reaney's Of Galway Supporting NUIG Volunteer Services Abroad Handicap (45-65) (Div 1)12f · Soft To Heavy · 16 ran 2nd 5/1

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 Donnacha O'Brien's strike rate?: Donnacha O'Brien has won 400 of 2,030 rides since 2008, a strike rate of 19.7% (as at 6 November 2026). Figures are computed from our own results archive.
Which course does Donnacha O'Brien do best at?: Tipperary by strike rate: 19 wins from 66 rides (28.8%) since 2008. Read from the 15 courses with the most rides 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.
Which yard does Donnacha O'Brien ride most for?: A P O'Brien, with 994 rides since 2008 — 49% of the total. That pairing has won 245 (24.6%).
What is Donnacha O'Brien's Fair A/E?: 1.11, from 2,025 rides 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.