David Vandyke is certain he won't see the best of Yankee Rose until the filly's three-year-old season, but it won't stop him from toying with the idea of pursuing a start in the Golden Slipper next March.
Yankee Rose finished best along the rails under the guidance of in-form jockey Jason Collett to win the Viridian Lightbridge Plate (1100m) by a long neck over Matthew Smith's Faraway Town on Saturday at Rosehill. Godolphin's Telperion was one length back in third.
"Some of the people involved with the horse are new to the game and she only has to win another race like that to get a spot in the Golden Slipper," Vandyke said.
"It definitely keeps the dream alive and is something we will look at. But we won't go to the race if it is to the detriment of the filly."
Yankee Rose went out as a $26 hope with the TAB for the opening race but looked anything but an outsider in her debut win.
Collett chose to bide his time off a hot speed that softened up the fancied leading trio of Telperion ($2.10), King Of War ($3.60) and Pyx Chamber ($6).
He surged along the rails in the straight before edging to the front over the final 50m to score at big odds.
"I was actually confident she would run a big race," Vandyke said. "Her work on Tuesday was excellent. She pulled up terrific from that. She's very green, I mean she doesn't know what she is doing out there. Her legs were all over the place. Jason did what he does best and stuck to the fence and gave her some guidance in that way."
Vandyke plans on taking a cautious approach this preparation, with bigger things in store for his daughter of All American in 12 months.
"She is green on track and she is going to be a very exciting horse as a three-year-old over a mile or even further," he said. "What she is doing now is raw ability and she is a very exciting young horse. We will look how she recovers over the next few days then see if we should put her away."
Collett agreed with Vandyke's assessment, labelling the filly one to look out for as a three-year-old.
He continued his top form in Sydney when he notched up a double on Chris Waller-trained Religify in the Bradford Soundscreen Benchmark 93 (1100m).
"We had the speed but also didn't want to use him too much just to hold them out if they were going to pressure me. It worked out perfectly," Collett said.
"He is a tough horse. I sort of started asking him to quicken up there at about the 400m. Once I gave him a few urgings behind the saddle, he found them."
More than 10,000 attended the Derby Day meeting at Rosehill.