Seamie Heffernan riding Anthony Van Dyck to victory in  The Investec Derby Stakes at Epsom. O’Brien’s runner will bid for a double in the  Irish Derby at the Curragh. Photograph:  Alan Crowhurst/Getty Images)

Anthony Van Dyck headlines Aidan O’Brien’s six contenders for the Dubai Duty Free Irish Derby at the Curragh on Saturday. The Investec Derby winner, (...)

Anthony Van Dyck and Séamie Heffernan take the Epsom Derby in a thrilling finish. Photograph: Simon Cooper/PA

Anthony Van Dyck gave Aidan O’Brien a record-equalling seventh Investec Epsom Derby victory on Saturday when edging a dramatic all-Irish finish under (...)

Low Sun ridden by Seamie Heffernan wins The Dubai £500,000 Cesarewitch Stakes ahead of stablemate Uradel  in second and Cleonte  at Newmarket. Photograph:  Nigel French/PA Wire

Low Sun saw off stablemate Uradel to provide Willie Mullins with a one-two in the Dubai £500,000 Cesarewitch Stakes at Newmarket. Ireland’s perennial(...)

Broadway scored for Aidan O’Brien at Gowran Park. Photograph: Donall Farmer/Inpho

Broadway gained a deserved Group Three success on what was her 11th start of the season in the Denny Cordell Lavarack & Lanwades Stud Fillies Stak(...)

 Seamie Heffernan on Actress won the Ballyogan Stakes at the Curragh. Photo: Inpho

Aidan O’Brien’s Actress made just about all the running to win the TRM Ballyogan Stakes in clear-cut fashion at the Curragh. Seamie Heffernan bounced(...)

Highland Reel is set to make his final appearance in the Hong Kong Vase at Sha Tin. Photograph: Vince Caligiuri/Getty

Aidan O’Brien admits it will be hard to replace Highland Reel as he prepares to take a final bow in the Longines Hong Kong Vase at Sha Tin on Sunday. (...)

Mendelssohn, second from right,  ridden by jockey Ryan Moore on the way to winning the Breeders’ Cup Juvenile Turf  at Del Mar Race Track in  California. Photograph: Harry How/Getty Images

The Aidan O’Brien-trained Mendelssohn delivered in style on his $3 million price tag with an impressive Breeders’ Cup success in Friday night’s Juveni(...)

Saxon Warrior (R) holds off Roaring Lion to give Aidan O’Brien a 26th Group One of the season. Photograph: Alan Crowhurst/Getty

Aidan O’Brien is Ireland’s newest world record holder after Saxon Warrior provided the Co. Tipperary based trainer with a 26th Group One success of 20(...)

A general view of the Cambridgeshire meeting at Newmarket. Photograph: Julian Herbert/PA Wire

US Navy Flag put up a gutsy performance to lead home a one-two for Aidan O’Brien in the Juddmonte Middle Park Stakes at Newmarket. The 10-1 shot, ri(...)

 Frankie Dettori celebrates after riding Enable  to win The King George VI And Queen Elizabeth Stakes at Ascot in July.  Photograph:  Alan Crowhurst/Getty Images

Enable will face 17 rivals in Sunday’s Prix de l’Arc de Triomphe at Chantilly. John Gosden’s filly has carried all before her this season and is att(...)

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