A filly small in stature has come up big for her connections at Caulfield, winning the inaugural $300,000 VOBIS Sires.

Pure Scot notched her second win from her third start in Saturday's 1200m juvenile race, which was restricted to progeny of Victorian stallions nominated to the VOBIS Gold series, taking her earnings already to $225,000.

Pure Scot is by Purrealist out of the mare Enthrall and co-trainer David Hayes said Saturday's race had been a target for the filly who won on debut at Bendigo in December and then was third in the VOBIS Gold Rush at the same track earlier this month.

With Dwayne Dunn in the saddle, Pure Scot ($6) travelled in the middle of the 15-horse field before angling into the clear from the top of the home straight.

She made her run with eventual runner-up Seized ($7) on her outside and held him off to score by a half neck with Danger Deal ($8.50) running home well for third, another half length away.

"She's not the most robust filly, probably the smallest in the race, but she's probably got the biggest heart," Hayes said.

"She got under real pressure and kept finding."

It took the Lindsay Park stable's tally of winners in juvenile races this season to 30, with the biggest of those also coming at Caulfield when Catchy won the Group One Blue Diamond Stakes in February.

"It's been a good season," Hayes, who trains in partnership with his son Ben and nephew Tom Dabernig, said.

"And I think a lot of them will train on. I think this filly will just get better with age. And it's a $300,000 race too today. So that can't be overlooked."

Dunn said Pure Scot got into a bit of trouble early in the race but was able to overcome that and then put her opposition away in the straight.

"She's only tiny but she's got a really good engine," he said.