Aidan O’Brien has dominated Europe’s juvenile Group

One programme this autumn and is set to try and maintain that hot streak into Saturday’s Racing Post Trophy at Doncaster.

Ireland’s champion trainer has secured half-dozen of the 10 top-flight two-year-old races run so far in 2015 and has a proven track record in Doncaster’s mile highlight.

Kingsbarns in 2012 was the last of seven O’Brien victories in the Racing Post Trophy, a roll of honour that includes a pair of subsequent Epsom Derby heroes in High Chaparral and Camelot.

Champion trainer

With Air Force Blue’s Group One hat-trick, Minding’s wins in the Moyglare and the Fillies Mile, as well as Ballydoyle in the Prix Marcel Boussac, O’Brien’s competitors have had a tough 2015 although Britain’s champion trainer John Gosden fought back by securing both the Prix Morny and the Middle Park with Shalaa.

Gosden’s Royal Lodge Stakes winner Foundation is set to appear at Doncaster while O’Brien has a handful of options including the surprise Beresford victor, Port Douglas, and Beacon Rock who was runner-up in Newmarket’s Autuman Stakes last time.

In other news, Barry Geraghty was trumped by his brother Ross in Saturday's $300,000 American Grand National at Far Hills in New Jersey as the Gordon Elliott-trained Eshtiaal finished runner-up to Dawalan.

It was a second win in America’s most valuable steeplechase for Ross Geraghty who wore down his younger brother in the closing stages on the ex-Irish winner. Another ex-Irish trained horse, Rawnaq, was third.