Five St Leger entries will go on trial for Doncaster in the Gordon Stakes at Goodwood on Tuesday.
They are headed by Michelangelo, who is second-favourite behind Camelot in some markets for the final Classic of the season and represents four-time winning trainer John Gosden.
Michelangelo looked strong in a victory at Newmarket but faces stern opposition by way of Frankel’s younger brother Noble Mission, second to stablemate Thomas Chippendale at Royal Ascot.
Queen’s Vase third Ed De Gas, Godolphin’s lightly-raced Encke and Minimise Risk have entries in the Leger, while Farhaan and Peter Schiergen’s German raider Girolamo provide some added interest.