Chris Waller's template for Group One excellence points to a sense of timing with She's Clean, the least favoured of his three runners in the $400,000 Tattersall's Tiara at Eagle Farm on Saturday.

But the master Sydney trainer figures Red Tracer deserves her favouritism as he strives to equal his best Group One haul for a season in the weight-for-age race for fillies and mares.

Waller is chasing his ninth Group One win for 2013-2014 after the stable benchmark was set last year with Red Tracer's Tiara victory.

Experience, backed by numbers, has taught Waller to become a meticulous and advanced planner in his drive to deliver results at the elite level of racing.

In She's Clean, Waller makes a strong case that she fits the profile of a Tiara winner much better than her $26 quote would suggest.

"She dead-heated for fifth last year and we walked away from that race saying `she wasn't quite good enough to win but gee she will be the horse to beat next year'," Waller said.

"She's got to improve a bit more than what I expected but she has been set for the race for that reason."

Waller will be Australia's leading Group One trainer for the second consecutive season.

It's an achievement built on modest expectations for a trainer who is re-writing the record books since he trained his first Group One winner in 2008.

"Win one and work from there," Waller says of his Group One goals before each racing season.

"If you can get one off your back at the start of the season, in my mind things tend to flow.

"But one of the things I have learnt is you need representation."

Red Tracer is already on Waller's 2013-2014 Group One honour roll after winning the Myer Classic.

And in Waller's mind, Red Tracer lost nothing with her Stradbroke Handicap effort to finish midfield and he gives her an undeniable chance in what could be her racing swan song.

"Her run in the Stradbroke was fine," Waller said.

"I thought she had no luck whatsoever and could have fought out the finish. Therefore she is going into the race like a last-start winner to my eyes."

Catkins completes Waller's Tiara trio and she is on the third line of betting despite missing a vital lead-up run.