Trainer Anthony Cummings has never backed away from a Group One challenge and is updating plans for two of his three Saturday Randwick winners.

Strike The Stars, who is likely to have a summer campaign in Perth, may be aimed at the Emirates Stakes at Flemington before he heads west.

The talented five-year-old doubled his winning strike rate with a last-ditch victory in the City Tattersalls Club Cup Handicap, going into the race with just one win from 22 starts.

That victory had been posted two years earlier in the Gloaming Stakes.

Cummings said an inoculation last spring had adversely affected the five-year-old and he had taken almost a year to recover.

"He was inoculated for Hong Kong and through that preparation and the autumn he suffered the effects of it," Cummings said.

"He had a long break after the Doncaster and he has performed all the way through this preparation."

"The inoculation knocked the stuffing out of him.

"He is at the lower end of the weight scale for the Emirates. The hardest thing is to get into the race."

The Perth carnival has become an increasingly popular target for eastern state trainers in recent years with Cummings eyeing a Group One double achieved in 2009 by Sniper's Bullet.

The $1 million Railway Stakes (1600m) on November 23 with the $500,000 Kingston Town Stakes (1800m) two weeks later are the races he is looking at.

Strike The Stars younger brother Best Case was the first of the stable's three winners while Diamond Earth rounded off the day with her win in the Group Three Nivison.

The mare is among the entries for Friday night's Group One Manikato Stakes at Moonee Valley and the trainer will assess her when she arrives in Melbourne this week.

"She gets to Melbourne tomorrow," Cummings said.

"She is in the race on Friday night and there is a chance we could do that.

"It depends how quickly she settles in."