Aidan O’Brien: Ballydoyle handler will be well represented at the Group One extravaganza in France. Photograph: Lorraine O’Sullivan/Inpho

Aidan O’Brien has nominated Ruler Of The World and Chicquita as his two likely starters in Sunday’s €5 million Qatar Prix de l’Arc de Triomphe. It is (...)

Joseph O’Brien rides Leading Light to victory in the English St Leger at Doncaster in 2013. Photograph: Alan Crowhurst/Getty Images

Tomorrow’s Curragh leg of Champions Weekend faces both international and domestic competition from Arc trials day in Longchamp and the start of the 20(...)

Bracelet ridden by Joseph O’Brien before winning the Ribblesdale Stakes during Day Three of the 2014 Royal Ascot Meeting at Ascot. Photograph: Steve Parsons/PA Wire

Bracelet bounced back from her disappointing display in last month’s Qipco 1000 Guineas to give Aidan and Joseph O’Brien victory in the Ribblesdale St(...)

Anthem Alexander ridden by Pat Smullen on the way to victory in the Queen Mary Stakes on Day Two of the Royal Ascot festival. Photograph: David Davies/PA

A 17-1 double with Mustajeeb and Anthem Alexander at Royal Ascot yesterday may not help towards Pat Smullen’s pursuit of a seventh jockeys title at h(...)

Frankie Dettori:  aboard Treve for the Prince of Wales renewal and will be riding at this favourite track. Photograph: Steve Parsons/PA

It’s an equine Ladies Day this afternoon so it is only appropriate that one of the top female performers in modern times, Treve, looks set to put the (...)

Australia (above) remains firmly on course to lead Aidan O’Brien’s attempt on a historic Epsom Derby hat-trick this Saturday. The hot-favourite – acc(...)

Australia (centre) finishes third behind Night of Thunder (left) in the Qipco 2000 Guineas at Newmarket. Photograph: Alan Crowhurst/Getty Images.

Aidan O’Brien is wary about the prospect of soft ground at Epsom tomorrow week for Investec Derby favourite Australia. The Galileo colt has been all t(...)

Richard Hughes: has picked up the spare ride on Marco Botti’s Al Thakhira.

Not for the first time at the Curragh, Classic action over the track will be hugely influenced by what falls on it and a soggy Etihad Airways Irish 1(...)

Olympic Glory ridden by Frankie Dettori on their way to victory in the JLT Lockinge Stakes  at Newbury. Photograph: David Davies/PA

Frankie Dettori claimed a fourth JLT Lockinge Stakes as he guided Olympic Glory to an impressive success at Newbury.Given a patient ride with Montirid(...)

Barry Connell: reputed to have paid €1m for Champion Hurdle contender Our Connor. Photograph: Donall Farmer/Inpho

Interest in Barry Connell usually revolves around figures. He is a hugely-successful businessman after all and there will be no shortage of fig(...)