The Hong Kong File: Graham Cunningham looks ahead to Wednesday's Happy Valley action
Zac Purton is already away and clear atop the HK jockeys' table but it would take a brave punter to take a heavy position on this year's trainers' championship.
Tony Cruz leads on twelve winners after Street Scream completed a hat-trick at Happy Valley on Sunday but current champ Frankie Lor is only one behind after a double and Francis Lui, John…