Winx has been ranked the world's best racehorse on turf and third overall behind dirt performers Arrogate and California Chrome.
The dual Cox Plate winner has been given a rating of 130 for her eight-length win over Hartnell in her defence of Australia's weight-for-age championship last month.
Arrogate leap-frogged California Chrome when he beat him in the Breeders' Cup Classic to earn a mark of 134 in the Longines Worlds Best Racehorse Rankings with California Chrome on 133.