Trainer Profile

Aidan P. O'Brien

Best Racing Class Achieved

Multiple Graded Stakes Winning Trainer

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Career Statistics
Starts Firsts Seconds Thirds Earnings
226 27 27 26 $32,195,715

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*Includes North American and Dubai World Cup Day statistics (must have at least one start in North America)


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Year Starts Firsts Seconds Thirds Earnings Earnings Per Start Win % ITM % All Starts
Career 226 27 27 26 $32,195,715 N/A $142,459 12% 35% N/A
2017 25 2 4 4 $2,555,623 $102,225 8% 40% View
2016 22 2 2 3 $3,876,822 $176,219 9% 32% View
2015 12 3 1 1 $2,789,003 $232,417 25% 42% View
2014 9 1 2 0 $986,520 $109,613 11% 33% View
2013 8 1 1 1 $2,344,667 $293,083 13% 38% View
2012 16 1 1 1 $1,148,711 $71,794 6% 19% View
2011 22 7 1 2 $4,411,315 $200,514 32% 45% View
2010 6 1 0 0 $1,219,174 $203,196 17% 17% View
2009 9 1 1 0 $406,800 $45,200 11% 22% View
2008 10 0 4 1 $1,838,850 $183,885 0% 50% View
2007 9 0 2 0 $891,664 $99,074 0% 22% View
2006 11 1 1 2 $760,796 $69,163 9% 36% View
2005 12 1 1 1 $1,151,337 $95,945 8% 25% View
2004 12 0 1 5 $1,037,300 $86,442 0% 50% View
2003 10 1 2 2 $1,496,800 $149,680 10% 50% View
2002 11 3 1 1 $2,894,200 $263,109 27% 45% View
2001 8 1 1 1 $1,104,800 $138,100 13% 38% View
2000 7 1 1 0 $1,199,413 $171,345 14% 29% View
1999 5 0 0 1 $81,920 $16,384 0% 20% View
1998 1 0 0 0 $0 $0 0% 0% View
1996 1 0 0 0 $0 $0 0% 0% View

Racing achievements and Top 100 Rankings include North American (U.S., Canada and Puerto Rico) Thoroughbred races only.

Breeders' Cup Highlights

1st Breeders' Cup Juvenile Turf - 2017 - Mendelssohn

1st Longines Breeders' Cup Turf - 2016 - Highland Reel (IRE)

1st Longines Breeders' Cup Turf - 2015 - Found (IRE)

1st Breeders' Cup Juvenile Turf - 2015 - Hit It a Bomb

1st Breeders' Cup Turf - 2013 - Magician (IRE)

1st Breeders' Cup Juvenile Turf - 2012 - George Vancouver

1st Emirates Airline Breeders' Cup Turf - 2011 - St Nicholas Abbey (IRE)

1st Breeders' Cup Juvenile Turf - 2011 - Wrote (IRE)

1st Breeders' Cup Marathon - 2009 - Man of Iron

1st John Deere Breeders' Cup Turf - 2003 - High Chaparral (IRE)

1st John Deere Breeders' Cup Turf - 2002 - High Chaparral (IRE)

1st Bessemer Trust Breeders' Cup Juvenile - 2001 - Johannesburg

2nd Breeders' Cup Filly and Mare Turf - 2017 - Rhododendron (IRE)

2nd Breeders' Cup Mile - 2017 - Lancaster Bomber

2nd Breeders' Cup Juvenile Turf - 2016 - Lancaster Bomber

2nd Breeders' Cup Juvenile Fillies Turf - 2015 - Alice Springs (IRE)

2nd Breeders' Cup Juvenile Turf - 2013 - Giovanni Boldini

2nd Breeders' Cup Classic - 2008 - Henrythenavigator

2nd Grey Goose Breeders' Cup Juvenile Turf - 2008 - Westphalia (IRE)

2nd Grey Goose Breeders' Cup Juvenile Fillies Turf - 2008 - Heart Shaped

2nd NetJets Breeders' Cup Mile - 2007 - Excellent Art (GB)

2nd Breeders' Cup Juvenile Turf - 2007 - Achill Island (IRE)

2nd John Deere Breeders' Cup Turf - 2005 - Ace (IRE)

2nd NetJets Breeders' Cup Mile - 2004 - Antonius Pius

2nd Breeders' Cup Filly & Mare Turf - 2003 - L'Ancresse (IRE)

2nd NetJets Breeders' Cup Mile - 2002 - Rock of Gibraltar (IRE)

2nd Breeders' Cup Turf - 2001 - Milan (GB)

2nd Breeders' Cup Classic - 2000 - Giant's Causeway

3rd Longines Breeders' Cup Turf - 2017 - Highland Reel (IRE)

3rd Breeders' Cup Juvenile Fillies Turf - 2017 - September (IRE)

3rd Longines Breeders' Cup Turf - 2016 - Found (IRE)

3rd Breeders' Cup Classic - 2013 - Declaration of War

3rd Breeders' Cup Turf - 2012 - St Nicholas Abbey (IRE)

3rd Emirates Airline Breeders' Cup Filly and Mare Turf - 2011 - Misty For Me (IRE)

3rd John Deere Breeders' Cup Turf - 2004 - Powerscourt (GB)

3rd Breeders' Cup Filly & Mare Turf - 2003 - Yesterday (IRE)

3rd Bessemer Trust Breeders' Cup Juvenile - 2002 - Hold That Tiger

3rd Breeders' Cup Mile - 2001 - Bach (IRE)

Top 100 Rankings (Since 2000)

Ranked 66th by Earnings - 2017

Ranked 33rd by Earnings - 2016

Ranked 51st by Earnings - 2015

Ranked 76th by Earnings - 2013

Ranked 18th by Earnings - 2011

Ranked 43rd by Earnings - 2002

Top 20 Horses

Horse Sex Earnings Best Win (Race Class) Best Win (Race Name)
St Nicholas Abbey (IRE) Horse $5,917,000 Grade 1 Winner Dubai Sheema Classic Presented by Longines
Highland Reel (IRE) Horse $3,127,300 Grade 1 Winner Longines Breeders' Cup Turf
High Chaparral (IRE) Horse $3,066,411 Grade 1 Winner John Deere Breeders' Cup Turf
Found (IRE) Mare $2,010,000 Grade 1 Winner Longines Breeders' Cup Turf
Magician (IRE) Horse $1,948,000 Grade 1 Winner Breeders' Cup Turf
Mendelssohn Colt $1,750,000 Grade 1 Winner Breeders' Cup Juvenile Turf
Cape Blanco (IRE) Horse $1,736,000 Grade 1 Winner Arlington Million S.
Giant's Causeway Horse $1,600,593 Grade 1 Winner Esat Digifone Irish Champion S.
Seventh Heaven (IRE) Mare $1,420,000 N/A N/A
Daddy Long Legs Horse $1,205,000 Grade 2 Winner U.A.E. Derby Sponsored by The Saeed & Mohammed Al Naboodah Group
Lines of Battle Gelding $1,200,000 Grade 2 Winner U.A.E. Derby Sponsored by The Saeed & Mohammed Al Naboodah Group
Joshua Tree (IRE) Horse $1,200,000 Grade 1 Winner Pattison Canadian International S.
Powerscourt (GB) Horse $1,107,767 Grade 1 Winner Arlington Million S.
Henrythenavigator Horse $1,000,000 N/A N/A
Ballingarry (IRE) Horse $900,000 Grade 1 Winner Canadian International S.
Deauville (IRE) Horse $859,400 Grade 1 Winner Belmont Derby Invitational S.
Galileo (IRE) Horse $798,150 Grade 1 Winner King George VI & Queen Elizabeth Diamond S.
Treasure Beach (GB) Horse $789,800 Grade 1 Winner Secretariat S.
Lancaster Bomber Colt $770,000 N/A N/A
Wrote (IRE) Horse $740,000 Grade 1 Winner Breeders' Cup Juvenile Turf



As of 04.25.18