O’Brien concerned about Australia’s fitness

Aidan O’Brien has issued concerns over the potential fitness of Australia as the dual Derby winner is pitched into all-aged competition for the first time in the Juddmonte International at York tomorrow.

Since being narrowly beaten into third by Night Of Thunder and Kingman in the 2000 Guineas, the son of Galileo and Ouija Board has blown away his opponents at Epsom and the Curragh to confirm himself the leading three-year-old over middle distances.

With just five rivals lining up, the trainer’s son Joseph is set to slim down to 8st 12lb to keep the partnership intact.