Dual Group One winner Streama has been scratched from Saturday's Emirates Stakes at Flemington.
The Guy Walter-trained mare, withdrawn on veterinary advice, was to have been ridden by leading Sydney jockey Hugh Bowman.
Bowman will now switch to the Gwenda Markwell-trained Rolling Pin.
The scratching paves the way for first emergency Free Wheeling to gain a start in the $1 million race.
Jockey Christian Reith claimed his first Group One win aboard Nechita at Flemington last Saturday and had been hopeful Free Wheeling would get a start in the Emirates.
Free Wheeling is one of two Peter Snowden-trained runners along with Epsom Handicap runner-up Ambidexter.
"He'll be at the top of his game on Saturday if he gets a run," Reith said after riding a treble at Hawkesbury on Thursday.