New Zealander Catalyst is having veterinary tests to determine the extent of a back problem.
The consistent Miss Siska will step up to Group One level in the Australian Cup at Flemington.
Trainer Chris Waller will put blinkers on Golden Slipper contender Global Quest in the Todman.
Trainer Gordon Richards believes Gytrash can complete the Lightning/Newmarket double.
Trainer Chris Anderson will delay a decision on Profit's return despite his barrier trial win.
King Of Leogrance remains the Adelaide Cup favourite despite drawing barrier 15 of 16.
British racing authorities will monitor prime minister Boris Johnson's advice over coronavirus.
The Cox Plate trophy will be taken on a tour of New Zealand where many winners have come from.
Alizee will try to win her fourth Group One race in the Canterbury Stakes at Randwick.
Harlem (red cap) will attempt to won his 3rd Australian Cup and his second with Jamie Kah aboard.