racenet.com.au. Chris Waller and James McDonald both endorsed Pinhole as a future Melbourne Cup contender after a big win at Flemington. Champion trainer Chris Waller has the horse and blueprint to target the Melbourne Cup next year with emerging stayer Pinhole. Gilbert Gardiner is a sports reporter for the Herald Sun and Sunday Herald Sun. Pinhole completed a reconnaissance Flemington course proper gallop on Tuesday to tune up for the Gold Cup.