The Offer has maintained Sydney Cup favouritism after the barrier draw with confirmation the Group One staying test is almost certain to be run on a rain-affected track.
The Gai Waterhouse-trained The Offer, winner of last Saturday's Chairman's Handicap in heavy going, remained a $2.80 favourite after coming up with barrier eight.
The Offer has four wins and a placing from five heavy track starts.
"I think the best we could get to is probably a slow track," Randwick track manager Nevesh Ramdhani said.
Sertorius firmed from $9 to $8 after coming up with barrier three but co-trainer Jamie Edwards will monitor the track condition just as much as his horse before confirming a start.