Otherwise, she is nominated to run in the $40,000 Novotel Mile at Ellerslie on Saturday.
James McDonald has been booked for the Chipping Norton Stakes mount.
McDonald was reunited with Silent Achiever when the 4-year-old exceeded first-up expectations with a narrow defeat under 61kg at Ellerslie last month. "It was a huge return ... far better than I thought she could do."
Silent Achiever has raced in Sydney before with her courageous minor placing in the Rosehill Guineas the standout among two autumn carnival runs last year. Trainer Chris Waller said he expected his Chipping Norton Stakes team to be reduced to five runners from the eight horses he nominated.
His defectors are likely to be the 3-year-olds Tougher Than Ever and Sacred Falls and Saturday's Millie Fox Stakes winner Red Tracer.
"Tougher Than Ever and Sacred Falls will probably wait until the Randwick Guineas," Waller said.
Runner-up in the Apollo Stakes at his latest run, Tougher Than Ever contested a Rosehill barrier trial won by Fast Clip yesterday.
"Red Tracer will be saved for the Coolmore Classic."
The 2011 winner Danleigh and 2012 winner Shoot Out will be to the forefront of Waller's bid for a hat-trick in the A$350,000 race.
-AAP