Winx will have a maximum of 10 rivals in Saturday's George Ryder Stakes, for which three-year-old Godolphin colt Kementari the second favourite.
The champion is at $1.10 in first markets to win her third George Ryder Stakes at Rosehill and take her Group One tally to 17, one more than the recognised world record of champion American horse of the 1980s, John Henry.
Kementari is on the second line of betting at $8, but Godolphin trainer James Cummings is yet to make a decision whether he runs.
If he does, Brenton Avdulla will replace the suspended Glyn Schofield, who has been aboard Kementari in each of his three wins so far this carnival including the Randwick Guineas.
Dual Group One winner Happy Clapper is at $15, with the remaining entries at $26 or longer.
Winx's jockey Hugh Bowman passed a mandatory cognitive test today after suffering concussion in a fall from the mare's stablemate, Golden Slipper contender Performer, last Saturday week.
In his absence, Kerrin McEvoy was aboard Winx when she had a solid race day gallop at Rosehill on Saturday. She did exactly what trainer Chris Waller wanted her to, running 1:02.32 for 1000 metres and running home her last 600 in 35.46.
"The idea is to stimulate her and keep her settled when she has three weeks between runs," Waller said. "She's nice and relaxed."
Winx was last week named the equal best horse in the world in the first rankings for 2018 for her winning performance in the Chipping Norton Stakes.
Waller and the mare's owners are expected to announce next week whether she will travel to England, where her most likely targety would be the Queen Anne Stakes over a mile (1600m) on the first day of the Royal Ascot meeting in June.