A homebred for Keith and Ruth Leonard, who bred and raced Danleigh, the Chris Waller trained Highleigh improved on her last start third at the same venue to power home and win the 1350 metre maiden by a long neck.
It was just the third start for Highleigh, who looks as though she will relish a slightly longer journey.
Highleigh is the fifth winner from Graceful Lily, who also has a yearling filly by So You Think to follow.
So You Think has nine Australian winners on the board, not to mention his Group I NZ 1,000 Guineas winner La Diosa and has moved into second place on the Australian Second Crop Sires List by earnings.
The 10 time Group I winning son of High Chaparral (IRE) stands at a fee of $49,500.