Whyte holds the aces

Douglas Whyte has a full house, with a couple of aces, which looks a winning hand in tonight's Jockey Challenge.

The only rider with mounts in all eight races, Whyte takes the reins on Call Me Achiever in a Class Four and later on Simple in a Class Three, with both horses seemingly having a class edge on their rivals.

Whyte was a clear $2.50 favourite last night, ahead of Derek Leung Ka-chun ($7) and Brett Prebble ($7).