O'Brien five among Racing Post ten Aidan O'Brien is responsible for five of the 10 juveniles confirmed for Saturday's Racing Post Trophy at Doncaster. The master of Ballydoyle has saddled seven previous winners of the end-of-season Group One, with High Chaparral (2001), St Nicholas Abbey (2009) and Camelot (2011) among those on the roll of honour for the team. This year's potential runners include Beresford Stakes scorer Port Douglas, impressive Curragh maiden winner Black Sea and Royal Lodge runner-up Deauville. Johannes Vermeer and Shogun, fourth and sixth respectively in the Prix Jean-Luc Lagardere at Longchamp earlier this month, complete the squad. The home team is headed by John Gosden's unbeaten colt Foundation, three-quarters of a length ahead of Deauville in the Royal Lodge in late September. Mengli Khan is an interesting contender for one of the sport's brightest young trainers, Hugo Palmer, after impressing on his second start at Nottingham a fortnight ago. Peter Chapple-Hyam, who won the Racing Post Trophy with subsequent Derby hero Authorized in 2006, could run Marcel, not seen since scoring at Newcastle in late August. William Muir's Royal Reserve and the Richard Hannon-trained Tony Curtis complete the possibles.
