Sequence heads Voltigeur field Derby second Main Sequence features among six runners declared for Wednesday's Neptune Investment Management Great Voltigeur Stakes at York. David Lanigan's charge found only Camelot too good at Epsom and was subsequently an unlucky fourth in France. Frankel's younger brother Noble Mission and Godolphin runner Encke fought out a thrilling finish in the Gordon Stakes last time and they clash again here. Noble Mission's trainer Sir Henry Cecil also runs King Edward VII Stakes winner Thomas Chippendale while Godolphin trainer Mahmood al Zarooni has a second string to his bow in ex-German runner Energizer. The latter was snapped up by the boys in blue following his Royal Ascot win and will be making his Godolphin bow. Thought Worthy, third in the King Edward VII and fourth in the Derby, completes the line up for John Gosden.