BIG Brown filly Nancy looks assured of graduating to far better races as her career unfolds following a monumentally impressive debut win at Hawkesbury on Thursday.

Ridden by champion jockey Tommy Berry, a slow start meant that Nancy was back second last on the fence for the first half of the race but seemingly with plenty to offer.

Berry began to ask Nancy to improve at the top of the straight as the pair started to look ominous despite still giving away a considerable start.

It quickly became apparent that Nancy’s finishing speed was going to prove decisive and in the end, she streaked to an emphatic win over the rapid-fire 1000m.

“We’re going to take a lot from today, how she went and how she performed, if she can relax over a little bit further it just adds more strings to her bow,” co-trained Paul Snowden said.

“There are no immediate plans, we are just going to take her home and take it one run at a time.  She’s still an immature filly that is going to improve from each run so we’ll just take it nice and quietly.

“(Being by Big Brown) she is only going to get better with time. She is a very tall filly.”

Nancy is a superbly bred filly, not only is she by the Kentucky Derby/Preakness winner and now globally successful sire Big Brown, her dam is the Tibbie Stakes winner Shalimar Sky.

What makes Nancy’s 1000m win even more encouraging from a long term point of view is that her second and third dams are by Melbourne Cup sires Kala Dancer and Zamazaan.