The Buffering (1350m) is a wild card race for the $1 million Magic Millions Cup and a win would make Victorem eligible to head to the big race on January 12.
Win, lose or draw on Saturday it has been a good Brisbane summer for Port Macquarie-based Graham who has been campaigning in Queensland with six horses.
Her team has won four races and recorded four minor placings reaping about $250,000 prize money.
Graham said she had been pleased with Victorem since his last-start win in the Listed Lough Neagh Stakes two weeks ago.
“He is up in weight but has drawn barrier three which is a help,” she said.
Trainer Tony Gollan will rely on Most Important, who won the Buffering in 2016, in Saturday's race.
He had also entered in-form I'm A Rippa but elected to scratch him with the Magic Millions day in mind.