Only one added to Leger As expected, Amanda Perrett`s Demophilos was the only supplementary entry at today`s noon deadline for next Saturday`s Rothmans Royals St Leger at Doncaster.The progressive Dr Devious colt was only beaten a neck by Alexius in the Gordon Stakes at Goodwood, and was then a highly-creditable third to Milan in the Great Voltigeur Stakes at York.Both events are recognised trials for the world`s oldest Classic and his conquerors are among the 5-2 co-favourites with Ladbrokes for the world`s oldest Classic, while Demophilos is a 12-1 chance.He will be Mrs Perrett`s first Leger runner since she took over the running of the Coombelands stables in Pulborough from her father Guy Harwood in 1996.Ladbrokes` betting: 5-2 Alexius, Mr Combustible, Milan, 10-1 And Beyond, 12-1 Mediterranean, Demophilos, 20-1 Pugin, Alunissage, Wareed, 25-1 bar.