Idaho heads O’Brien trio in Great Voltigeur
Aidan O'Brien is responsible for three of the six runners in the Betway Great Voltigeur Stakes at York on Wednesday.
The Ballydoyle trainer has not won this Group Two prize since the 2003 success of Powerscourt, but has a formidable hand for this year's renewal.
Heading the challenge is Idaho, who has his sights lowered a fraction after finishing third in the Investec Derby and third in the Irish Derby behind Dermot Weld's Harzand.
O'Brien also runs Bahrain Trophy winner Housesofparliament and Gordon Stakes runner-up The Major General.
Michael Stoute has claimed the recognised St Leger Trial a record seven times and has a major contender for this year's renewal in the form of Across The Stars.
The three-year-old disappointed in the Derby, but bounced back to win the King Edward VII Stakes at Royal Ascot and has been given time to get over those June exertions.
Imperial Aviator looked every inch a Pattern-race performer for Roger Charlton when destroying his rivals in the London Gold Cup at Newbury in May, but failed to get competitive in the French Derby three weeks later.
The small but select field is completed by the Mick Channon-trained Harrison.