Epsom Handicap winner Hartnell headlines a field of 18 plus one emergency for the Group One Toorak Handicap.
Hartnell will be reunited with jockey James McDonald for the first time since their 2016 Melbourne Cup minor placing.
The James Cummings-trained Hartnell has top weight of 59kg and barrier seven for Saturday's 1600m race at Caulfield while the Charlie Appleby-trained Sir Rupert Clarke Stakes winner Jungle Cat has barrier four with James Doyle to ride.
The Darren Weir-trained Land Of Plenty will have to overcome the outside barrier while the Lindsay Park-trained Muraaqeb has drawn the rails.