Such is Gai Waterhouse's opinion of Urban Groove, the lightly-raced filly could step into the Group One arena after backing up a maiden win at Kembla Grange with Listed success at Rosehill on Saturday.

Waterhouse and owner Nick Vass will discuss the possibility of a seven-day back-up to the Flight Stakes (1600m) after Urban Groove's victory in the Reginald Allen Stakes (1200m).

The filly's career was put on hold when she cracked her pelvis while she was being prepared for the Magic Millions earlier this year.

She made a belated debut two weeks ago for a five length win at Kembla Grange and was sent out the $2.25 favourite for the Reginald Allen.

Tommy Berry guided Urban Groove to the line half a length in front of Brave Soul ($21) with Roll The Bones ($12) another 1-1/2 lengths third.

"She fractured her pelvis as a young horse and so often they don't come back from that," Waterhouse said.

"It's wonderful to see.

"We'll let the dust settle and think about next week."

Berry said the filly's best attribute was her attitude.

"She was just so relaxed," he said.

"I gave her a tap and she didn't respond but when I pulled the whip over to the right, she just went whoosh.

"She did it all with ease. She hasn't raised a sweat."

Vass said no matter what happened in the immediate future he was keen to take Urban Groove to the Magic Millions carnival at the Gold Coast in January.

"She was being prepared for the Magic Millions this year when she cracked her pelvis. That's how big an opinion we had of her," he said.

"Gai will decide whether we back up next week but she will be aimed at the Magic Millions three-year-old race."

The Vass-owned No Looking Back was first past the post in this year's $2 million Magic Millions Classic but lost the race on protest to the Berry-ridden stablemate Driefontein.