Aidan O’Brien odds-on to reach 30 Group One winners in 2017

Roly Poly is set to tackle Saturday’s Sun Chariot at Newmarket as second favourite

O’Brien secures second Group One double in 24 hours at Chantilly

Happily and Rhododendron strike to increase trainer’s Group One wins to 22 this year

First meeting of breakaway trainers’ body in the North

Aidan O’Brien is even money to break 14-year record of 25 Group/Grade One wins in calendar year

Capri heads Aidan O’Brien’s St Leger options

Venice Beach also among trainer's entries for world's oldest classic at Doncaster

Ryan Moore faces hectic weekend starting with Idaho in New York

Top English jockey could secure Group Three hat-trick at Curragh

O’Brien gears up for Goodwood with Roly Poly Group One success

US Army Ranger takes on Big Orange in Tuesday’s Goodwood Cup

Caravaggio set for Deauville Group One In August

Aidan O’Brien seals Group Two Curragh double with Spirit of Valor and Elizabeth Browning

Curragh admission fee unchanged despite temporary facilities

HQ reopens this weekend amid criticism over holding races during building work

Willie Mullins says Douvan ready to tackle two-mile route

Un De Sceaux remains in contention for Sandown’s Betfair Tingle Creek Chase

O’Brien puts Breeders’ Cup team through their paces

O’Brien is optimistic the Coolmore team can enjoy one of its best two days at Santa Anita

Aidan O’Brien relentless in quest to break record

Trainer’s trip to Paris vital as he homes in on Frankel’s tally of top-flight victories

David Wachman hopes to bow out in style with Rekindling Grade One success

Aidan O’Brien may enter Found in Breeders’ Cup Classic

Many Ballydoyle horses have failed to make transition to dirt in US’s most valuable race

Capri to lead Aidan O’Brien’s bid for Racing Post Trophy

Doncaster feature could help trainer close in on Bobby Franke’s Group One world-record

Ruby Walsh sets Paris target after American National win

Aidan O’Brien moves on to 21 Group One wins with Minding’s QEII success at Ascot

Churchill bids for Dubai Dewhurst Stakes glory at Newmarket

Aidan O’Brien’s No 1 is already favourite for next year’s 2,000 Guineas and Derby

Donnacha O’Brien targeting maiden success for Finn McCool at Navan

Aidan O’Brien runs a trio of Fastnet Rock newcomers in a two-mile maiden where Dermot Weld’s Vigil makes a first start on the flat

Churchill can push O’Brien closer to Frankel’s long-standing record

Champion trainer heads for Newmarket after extraordinary Arc ‘clean sweep’

Churchill can push O’Brien closer to Frankel’s long-standing record

Champion trainer heads for Newmarket after extraordinary Arc ‘clean sweep’

Aidan O’Brien to run Churchill in Dewhurst Stakes

National Defense wins the Qatar Prix Jean-Luc Lagardere at Chantilly

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