Group One VRC Oaks winner Miami Bound will ramp up preparations towards her return when she contests a Flemington jump-out.
O’Brien also won the Melbourne Cup with Vow And Declare.
Miami Bound is scheduled to go around in a jump-out at Flemington on Friday in preparation for a return at Caulfield next month in the Group Two Autumn Classic on a path to Group One targets in Sydney.
“She’s going super,” O’Brien said.
“She’s furnished into a lovely autumn three-year-old filly and she hasn’t put a foot wrong since the Oaks.
“I’m looking forward to seeing what she can do for us in the autumn.
“She actually came out of Cup week in great order even though she raced twice and she’s just thrived the whole summer.”
The $1 million Australian Oaks (2400m) is at Randwick on April 11 with Miami Bound and the Chris Waller-trained Funstar the $6 equal early favourites.