Mongolian Khan is the early Caulfield Cup favourite while Arod is among four horses at the top of the Cox Plate market after release of nominations.
Steven Pateman's hopes of riding Bashboy as the horse attempts a third Grand National Steeplechase win hinge on an appeal against a careless riding ban.
The Sam Kavanagh cobalt inquiry continues in Sydney with controversial harness racing identity John Camilleri expected to give evidence.
Dr Tom Brennan, a central figure in the Sam Kavanagh cobalt case, says he originally lied about his involvement to protect to Melbourne trainers.
The Caulfield Cup has attracted 209 nominations including 25 internationals while the Cox Plate has 173 entries including 20 overseas-trained horses.