Winx will start from the outside barrier in the field of 10 for the Queen Elizabeth Stakes at Randwick as she attempts to take her winning streak to 25.
Doncaster Mile winner Happy Clapper, the second favourite, will start beside the champion in gate nine.
If Winx wins on Saturday, she will record her 18th Group One win.
Humidor, who ran second to Winx in the Cox Plate, will start from the inside alley while Irish visitor Success Days will jump from eight.
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