AP McCoy wins second feature race at Grand National festival . Rides Don Cossack to victory in the Cheltenham Gold Cup on Friday . Set to ride favourite Shutthefrontdoor at Aintree on Saturday .
AP McCoy wins second feature race at Grand National festival . Rides Don Cossack to victory in Melling Chase on Friday . Set to ride favourite Shutthefrontdoor at Aintree on Saturday .