The sky is the limit for Black Caviar if she can again dominate her opposition in Saturday's Danehill Stakes at Flemington, and trainer Peter Moody is looking forward to what he describes as her defining race.The exciting three-year-old filly is unbeaten in three starts which she has won by an aggregate of 14-3/4 lengths.But she steps up from two ultra-impressive Listed victories to Group Two company for the first time in the 1200m feature."It's just a nice progression for her. She's stepped up

The sky is the limit for Black Caviar if she can again dominate her opposition in Saturday's Danehill Stakes at Flemington, and trainer Peter Moody is looking forward to what he describes as her defining race.

The exciting three-year-old filly is unbeaten in three starts which she has won by an aggregate of 14-3/4 lengths.

But she steps up from two ultra-impressive Listed victories to Group Two company for the first time in the 1200m feature.

"It's just a nice progression for her. She's stepped up and each time it's been a little bit harder," Moody said.

"The bar has been lifted and she's met it and it's no different tomorrow."

"You've got the (Golden) Slipper form and a bit of winter and early spring form through the likes of Tollesprit and Grand Harmony.

"So it all comes together tomorrow and if she wins this race we're nicely placed for the three-year-old fillies races and maybe colts races.

"And if she can dominate like she has been then maybe we can lift the bar further."

Moody has already earmarked the Group One weight-for-age Manikato Stakes (1200m) at Moonee Valley on September 25 for the filly should she live up to his expectations on Saturday.

The Caulfield trainer won the 2007 Danehill, which has been elevated from Group Three to Group Two level this year, with another filly Tan Tat De Lago who, at $31, went forward and caused a big upset when she beat reigning Horse of the Year Scenic Blast.

Moody has a much higher opinion of Black Caviar.

"As six furlong (1200m) sprinters I know which one I'd rather be on," he said.

"Everything fell into place for her (Tan Tat De Lago) that day and hopefully it does again tomorrow."

Meanwhile, VRC Sires' Produce Stakes winner Rostova was scratched from the set-weights plus penalties event on Friday.

Trainer Steve Richards said the filly had a high white-cell blood count indicating a bug and as she had been treated for it she could not run on Saturday.

"She's eating and looks good but was quiet and docile this morning which is out of character for her," he said.

"It's better to hit it on the head now. It's unfortunate having to scratch her from a Group Two race but we can't take the risk."

After the scratching of Rostova, TAB Sportsbet tightened Black Caviar in from $1.70 to $1.60 favouritism ahead of Manhattan Rain at $7, Rarefied ($10), Grand Harmony ($13) with Delago Bolt and Tollesprit at $15.

Quezette Stakes winner Corsaire, the only other filly in the race, is at $21 with Black Caviar's stablemate Wanted at $26.