4-year-old Classics

If Helios Express (Aus) (Toronado {Ire}) is to add Sunday's HK$26-million (£2.63 million/US$3.33 million) BMW Hong Kong Derby to his victories in the Hong Kong Classic Mile and Hong Kong Classic Cup, he will have to do so from gate 13 in a field of 14 4-year-olds in the 2000-metre domestic centrepiece Sunday at Sha Tin Racecourse. The 102-rater is one of three in the race for four-time Derby-winning conditioner John Size, who will also send out Classic Cup third Ensued (Lemon Drop Kid) with Ryan Moore from barrier 12...