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A O'Brien Trainer

A O'Brien Profile

A O'Brien is a horse trainer based in Hong Kong. A O'Brien has a win strike rate of 20% and a career ROI of -12.

A O'Brien Last 12 Months Racing Form

A O'Brien last 12 months's career form is 17 Starts, wins, 2 seconds, 3 thirds.

A O'Brien has average win odds of 3 and an ROI of -100% over the last 12 months.

A O'Brien Current Season Racing Form

A O'Brien current season form is 14 Starts, wins, 2 seconds, 2 thirds.

A O'Brien has average win odds of 2.79 and an ROI of -100% over the current season.

A O'Brien's overall Stats: Trainer Racing History

Starts 1st 2nd 3rd Win % Place % Avg Win Odds ROI
Last 12 Months 17 2 3 % 29% 3.25 -100
Current Season 14 2 2 % 29% 2.79 -100

A O'Brien's Results: Trainer Racing History

Here is a list of tracks where A O'Brien has raced in the past 12 months and the current season. The list shows performance by A O'Brien across all tracks.

Past 12 months

Track Starts 1st 2nd 3rd W% P% Avg Win Odds ROI
Caulfield 1 - 1 - - 100% $6.50 -100%
DUBAI 1 - - - - - - -100%
Flemington 2 - 1 - - 50% $4.80 -100%
FR - CHANTILLY 1 - - - - - - -100%
FR - DEAUVILLE 3 - - 1 - 33% - -100%
FR - LONGCHAMP 5 - - 1 - 20% $4.80 -100%
G B - ASCOT 3 - 2 - - 67% $7.00 -100%
G B - DONCASTER 1 - - - - - - -100%
G B - EPSOM 1 - - - - - - -100%
G B - GOODWOOD 1 - - - - - - -100%
G B - NEWMARKET 1 - 1 - - 100% $5.50 -100%
G B - SANDOWN PARK 1 - - - - - - -100%
G B - YORK 1 - - - - - - -100%
IRE - CURRAGH 2 - - - - - $3.25 -100%
IRE - DUNDALK 1 - 1 - - 100% - -100%
IRE - LEOPARDSTOWN 1 - - - - - $3.67 -100%
IRE - NAAS 1 - 1 - - 100% $2.60 -100%
IRE - NAVAN 1 1 - - 100% 100% $1.10 10%
Moonee Valley 1 - - - - - $4.20 -100%
Randwick 1 - - - - - - -100%
Rosehill 2 - - - - - - -100%
Sha Tin 2 - - - - - $2.60 -100%
U S A - BELMONT PARK 1 - - - - - - -100%
U S A - DEL MAR 1 - - 1 - 100% - -100%
U S A - KEENELAND 3 - 1 - - 33% - -100%
U S A - SANTA ANITA 2 1 - - 50% 50% $4.80 140%
U S A - SARATOGA 1 - - - - - - -100%

This season

Track Starts 1st 2nd 3rd W% P% Avg Win Odds ROI
Caulfield 1 - 1 - - 100% $6.50 -100%
Flemington 2 - 1 - - 50% $4.80 -100%
FR - DEAUVILLE 2 - - - - - - -100%
FR - LONGCHAMP 5 - - 1 - 20% $4.80 -100%
G B - ASCOT 2 - 2 - - 100% - -100%
G B - DONCASTER 1 - - - - - - -100%
IRE - CURRAGH 2 - - - - - $1.57 -100%
IRE - LEOPARDSTOWN 1 - - - - - $3.67 -100%
Moonee Valley 1 - - - - - $4.20 -100%
Randwick 1 - - - - - - -100%
Rosehill 2 - - - - - - -100%
Sha Tin 2 - - - - - $2.60 -100%
U S A - DEL MAR 1 - - 1 - 100% - -100%
U S A - SANTA ANITA 2 1 - - 50% 50% $4.80 140%

Here is a list of the top jockeys who have ridden for A O'Brien along with their stats over the last 12 months and the current season.

Past 12 months

Jockey Starts 1st 2nd 3rd W% P% Avg Win Odds ROI
Ryan Moore 8 - - 1 - 13% $3.25 -100%
J A Heffernan 1 - - - - - $2.20 -100%
Donnacha O'Brien 1 - 1 - - 100% $1.80 -100%
Colm O'Donoghue 1 - - - - - - -100%
E Mc Namara 1 - 1 - - 100% - -100%
E J MC NAMARA 1 - - - - - - -100%
Katelyn Mallyon 1 - 1 - - 100% - -100%
D Oliver 1 - - - - - - -100%
B Melham 1 - 1 - - 100% - -100%
W M Lordan 4 - - 1 - 25% $1.22 -100%
P B BEGGY 1 - - - - - - -100%
J P Spencer 1 - - - - - - -100%
D Dunn 1 - - - - - - -100%
J DOYLE 1 1 - - 100% 100% $4.00 300%
M Zahra 1 - - - - - - -100%
J B Mc Donald 1 - - - - - $6.50 -100%
J Bowman 1 - - - - - - -100%
O Murphy 1 - 1 - - 100% - -100%
K Mc Evoy 1 - 1 - - 100% - -100%
Damian Lane 1 - - - - - - -100%
L F ROCHE 1 - - - - - - -100%
P C BOUDOT 1 - - - - - $41.00 -100%
M HUSSEY 1 - - - - - - -100%
M BARZALONA 1 1 - - 100% 100% $4.80 380%
L Dettori 1 - - - - - - -100%
I Mendizabal 1 - - - - - - -100%
Y Take 1 - - - - - - -100%
J VELAZQUEZ 1 - - - - - - -100%
C Soumillon 4 - 2 1 - 75% - -100%
B Shinn 1 - - - - - - -100%
Irad Ortiz 1 - - - - - - -100%
R Moore 1 - - - - - - -100%
Colin Keane 1 - - - - - - -100%

This season

Jockey Starts 1st 2nd 3rd W% P% Avg Win Odds ROI
Ryan Moore 6 - - - - - $2.79 -100%
J A Heffernan - - - - - - $3.06 206%
Donnacha O'Brien - - - - - - $2.00 -100%
Colm O'Donoghue - - - - - - - -100%
E Mc Namara - - - - - - - -100%
E J MC NAMARA - - - - - - - -100%
Katelyn Mallyon - - - - - - - -100%
D Oliver - - - - - - - -100%
B Melham - - - - - - - -100%
W M Lordan 4 - - 1 - 25% $3.75 -100%
P B BEGGY - - - - - - - -100%
J P Spencer - - - - - - - -
D Dunn - - - - - - - -100%
J DOYLE - - - - - - - -100%
M Zahra - - - - - - - -100%
J B Mc Donald - - - - - - $6.50 225%
J Bowman - - - - - - - -100%
O Murphy - - - - - - - -100%
K Mc Evoy - - - - - - - -100%
Damian Lane - - - - - - - -100%
L F ROCHE - - - - - - - -100%
P C BOUDOT - - - - - - $25.25 1163%
M HUSSEY - - - - - - - -
M BARZALONA - - - - - - $4.80 380%
L Dettori - - - - - - - -
I Mendizabal - - - - - - - -
Y Take 1 - - - - - - -100%
J VELAZQUEZ - - - - - - - -
C Soumillon 4 - 2 1 - 75% - -100%
B Shinn 1 - - - - - - -100%
Irad Ortiz - - - - - - - -
R Moore 1 - - - - - - -100%
Colin Keane - - - - - - - -

Here is a list of the next races and the most recent results for A O'Brien


December 2025

  • The Lion In Winter Last Race: 14 December 2025, Sha Tin R7

    3yoaH (Bay) Sea The Stars x What A Home

    CAREER 11 2-2-3

    EARNING $432,402

    WIN 18

    PLACE 64

  • Los Angeles Last Race: 14 December 2025, Sha Tin R4

    4yoaH (Bay or Brown) Camelot x Frequential

    CAREER 20 8-0-2

    EARNING $2,108,856

    WIN 40

    PLACE 50

November 2025

  • The Lion In Winter Last Race: 01 November 2025, U S A - DEL MAR R3

    3yoaH (Bay) Sea The Stars x What A Home

    CAREER 11 2-2-3

    EARNING $432,402

    WIN 18

    PLACE 64

October 2025

  • The Lion In Winter Last Race: 18 October 2025, G B - ASCOT R2

    3yoaH (Bay) Sea The Stars x What A Home

    CAREER 11 2-2-3

    EARNING $432,402

    WIN 18

    PLACE 64

  • The Lion In Winter Last Race: 18 October 2025, G B - ASCOT R2

    3yoaH (Bay) Sea The Stars x What A Home

    CAREER 11 2-2-3

    EARNING $432,402

    WIN 18

    PLACE 64

  • Los Angeles Last Race: 05 October 2025, FR - LONGCHAMP R3

    4yoaH (Bay or Brown) Camelot x Frequential

    CAREER 20 8-0-2

    EARNING $2,108,856

    WIN 40

    PLACE 50

  • Los Angeles Last Race: 05 October 2025, FR - LONGCHAMP R3

    4yoaH (Bay or Brown) Camelot x Frequential

    CAREER 20 8-0-2

    EARNING $2,108,856

    WIN 40

    PLACE 50

  • Los Angeles Last Race: 05 October 2025, FR - LONGCHAMP R3

    4yoaH (Bay or Brown) Camelot x Frequential

    CAREER 20 8-0-2

    EARNING $2,108,856

    WIN 40

    PLACE 50

September 2025

  • The Lion In Winter Last Race: 07 September 2025, FR - LONGCHAMP R4

    3yoaH (Bay) Sea The Stars x What A Home

    CAREER 11 2-2-3

    EARNING $432,402

    WIN 18

    PLACE 64

  • Los Angeles Last Race: 07 September 2025, FR - LONGCHAMP R5

    4yoaH (Bay or Brown) Camelot x Frequential

    CAREER 20 8-0-2

    EARNING $2,108,856

    WIN 40

    PLACE 50

August 2025

  • The Lion In Winter Last Race: 17 August 2025, FR - DEAUVILLE R1

    3yoaH (Bay) Sea The Stars x What A Home

    CAREER 11 2-2-3

    EARNING $432,402

    WIN 18

    PLACE 64

  • The Lion In Winter Last Race: 17 August 2025, FR - DEAUVILLE R1

    3yoaH (Bay) Sea The Stars x What A Home

    CAREER 11 2-2-3

    EARNING $432,402

    WIN 18

    PLACE 64

  • Los Angeles Last Race: 16 August 2025, IRE - CURRAGH R4

    4yoaH (Bay or Brown) Camelot x Frequential

    CAREER 20 8-0-2

    EARNING $2,108,856

    WIN 40

    PLACE 50

  • Los Angeles Last Race: 16 August 2025, IRE - CURRAGH R4

    4yoaH (Bay or Brown) Camelot x Frequential

    CAREER 20 8-0-2

    EARNING $2,108,856

    WIN 40

    PLACE 50

July 2025

  • The Lion In Winter Last Race: 06 July 2025, FR - DEAUVILLE R1

    3yoaH (Bay) Sea The Stars x What A Home

    CAREER 11 2-2-3

    EARNING $432,402

    WIN 18

    PLACE 64

June 2025

  • Los Angeles Last Race: 18 June 2025, G B - ASCOT R3

    4yoaH (Bay or Brown) Camelot x Frequential

    CAREER 20 8-0-2

    EARNING $2,108,856

    WIN 40

    PLACE 50

  • The Lion In Winter Last Race: 07 June 2025, G B - EPSOM R1

    3yoaH (Bay) Sea The Stars x What A Home

    CAREER 11 2-2-3

    EARNING $432,402

    WIN 18

    PLACE 64

May 2025

  • Los Angeles Last Race: 25 May 2025, IRE - CURRAGH R2

    4yoaH (Bay or Brown) Camelot x Frequential

    CAREER 20 8-0-2

    EARNING $2,108,856

    WIN 40

    PLACE 50

  • The Lion In Winter Last Race: 15 May 2025, G B - YORK R1

    3yoaH (Bay) Sea The Stars x What A Home

    CAREER 11 2-2-3

    EARNING $432,402

    WIN 18

    PLACE 64

  • Los Angeles Last Race: 05 May 2025, IRE - CURRAGH R1

    4yoaH (Bay or Brown) Camelot x Frequential

    CAREER 20 8-0-2

    EARNING $2,108,856

    WIN 40

    PLACE 50

A O'Brien News

Last Updated: 12/12/2025

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A O'Brien Next Race

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