O'Brien raises Duke doubts

Aidan O’Brien has warned that heavy rain could still rule Duke Of Marmalade out of a second clash with New Approach in the Tattersalls Millions Irish Champion Stakes at Leopardstown.

After an alarming drift in the betting on Wednesday in the face of sustained support for Jim Bolger’s Derby hero, the five-time Group One winner found himself struggling to hold on to his position at the head of the market.