Bart and James Cummings might have unearthed their next Classic horse in lightly raced three-year-old Nazir.

A half-brother to the stable's Group One winner Norzita, Nazir delivered on the staying promise he'd shown in two previous runs to land his first win in Wednesday's Cellarbrations Handicap (1900m) at Rosehill.

James Cummings confirmed the Group One ATC Australian Derby was in their sights.

"He's got the pedigree, he's nominated for the ATC Derby and there might be a good option for him to get a mile-and-a-half run under his belt beforehand," Cummings said.

"While some of the sharp horses cruised up and looked like they might have been a challenge late, he looked like the sort of horse that could have gone another lap."

By Mastercraftsman, the sire of VRC Oaks runner-up Thunder Lady, Nazir scored by a length over Low Places to give James McDonald a winning treble.

The top jockey scored earlier wins aboard Godolphin two-year-old Inner Circle and three-year-old filly Sweet Fire for Chris Waller.