Superstar Winx will start from barrier three as the odds-on favourite in the Queen Elizabeth Stakes.
The mare shortened from $1.15 to $1.10 before the barrier draw when the field of nine was declared.
Saturday's $4 million race over 2000 metres will be Winx's fourth and final start this autumn.
Champion Winx will have eight rivals as she bids to extend her winning streak to 17 at Randwick.
Among her opposition are Godolphin's Hartnell, the second favourite, and Doncaster Mile runner-up Happy Clapper.