Confidence breeds success and that was the case for apprentice Katelyn Mallyon after she landed her first stakes winner at Caulfield.

Mallyon made a return to the saddle at Kyneton on Monday after a fall at Moonee Valley in February aggravated an old back injury.

She rode a winner at Ballarat on Thursday but after three previous second placings in stakes races she was eager to break through.

That success came aboard the two-year-old Black Vanquish for Tom Hughes in the Listed Thoroughbred Club Cup (1200m) on Saturday before she followed it up with victory on Durendal in the Canaccord Genuity Handicap (1200m).

"It's good riding with confidence and I got that after my first stakes win," Mallyon said after Durandel's win.

"It's my first week back from injury and that's my third winner.

"It's a huge thrill and I just hope that it's the start of something and I can go on now and outride my claim."

Mallyon has a big opinion of Black Vanquish and believes with maturity he will develop into a smart three-year-old.

She said the son of Lonhro was one of the most exciting gallopers she had ridden.

"The horse has an unbelievable stride on him that I've never really experienced before," she said.

"He's still learning as he had only had those couple of starts previously and is only going to get better."

Sent out the $4.40 favourite, Black Vanquish scored a short neck victory over Payroll ($5.50) with Pearl Star ($15) the same margin back in third place.

Hughes got extra satisfaction out of Black Vanquish providing Mallyon with her first stakes victory.

His father Tom, renowned for pulling off some big betting plunges during his career, and Mallyon's grandfather, jockey Mick Mallyon, were a successful combination in years past.

Hughes says he will be keeping a watch on Brisbane's weather in coming weeks with the BTC Sires' Produce Stakes (1350m) at Doomben on May 23 under consideration.

"He relaxed beautifully," Hughes said.

"You would think seven furlongs to a mile wouldn't be a problem for him one day.

"We might take him up to Queensland for the Sires' Produce, but if it looks like being under water up there we'll stay home and look to the spring with him."

Michael Cahill, who made the trip down from Brisbane to partner the runner-up Payroll, said the filly would be suited by the extra ground at Doomben in the Sires' after coming from last on the turn.