A vital trackwork session at Moonee Valley on Tuesday morning will determine whether premier Sydney trainer Chris Waller has his first Cox Plate runner.
Shoot Out and Rangirangdoo have arrived safely in Melbourne with the Waller-trained stablemates both entered for weight-for-age showpiece.
But the trainer says the Crystal Mile may be the better option for Rangirangdoo while Shoot Out needs to show him he has no lasting effects from his hard run in the Epsom Handicap.
Shoot Out was anchored by his 58kg topweight in the Epsom, finishing seventh, four lengths from the winner Fat Al.
Rangirangdoo, who carried half a kilogram less than his stablemate, was another 1-1/4 lengths behind in 12th position.
"Shoot Out has got to work well on Tuesday morning to run," Waller said.
"The big weight hindered him in the Epsom on a day dominated by lightweights and leaders. The same was true for Rangirangdoo so I'm not too disheartened.
"I think the Crystal Mile is the race for Rangirangdoo.
"He's been to Moonee Valley before three years ago and won the Crystal Mile and I think it suits him.
"If he ran really well, he would back up in the Mackinnon Stakes."
If the pair run in separate races at Moonee Valley, Hugh Bowman would ride both.
Shoot Out has also been to Moonee Valley, running fourth in the 2010 Cox Plate when he was trained by John Wallace.
Rangirangdoo and Shoot Out join stablemate Red Tracer in Melbourne with the mare booking a place in the field for the Myer Classic with her third behind Streama in Saturday's Group Two Tristarc Stakes (1400m).
Red Tracer won the Group Two Premiere Stakes (1200m) in Sydney earlier this month in which Streama finished out of the placings.
But the Guy Walter-trained dual Group One winner was back to her best at Caulfield and the pair will clash again in the Group One Myer Classic (1600m) next Saturday week.
"Red Tracer is a Group Two horse but is capable of more if she gets a wet track in the Myer," Waller said.
The mare has a perfect score of five wins from five starts on slow and heavy tracks.