MIAMI, FL, USA - The second career meeting between Ashleigh Barty and Samantha Stosur went the way of the younger Aussie at the Miami Open on Saturday.

Barty needed just 58 minutes to dispatch her veteran compatriot, 6-0, 6-3, to move into the round of 16.

Stosur was a 6-4, 6-4 victory against the Aussie who is 12 years her junior in Miami two years ago, but on Saturday, the match was all in Barty’s favor from first ball.

"When I play against Sam, it's all about trying to work my way into her service games," Barty said after the match. "I was able to do that early and she gave me a couple of cheapies and I got on a bit of a roll. It was disappointing to not be able to close it out cleanly, but I got there in the end. 

"I think any win that you can get where you feel confident and in control on the court is a positive thing. I felt like I was very much in control of my game today. A few things went my way early, and that's sometimes all it takes."

The World No.11 didn't face a break point in the opening set, losing just five points on serve despite only serving at 44 percent, and broke Stosur three times. 

In the second set, Barty continued to roll early, as she built a 5-1 lead and looked to close Stosur out on serve.

Though the 2011 US Open champion broke Barty for the first time en route to winning consecutive games, she was unable to seal a complete comeback against the No.12 seed.

"I knew that I was doing the right things and Sam's execution was a little bit off. She gave me a few unforced errors which helped me get two, three, four points in a row on a few occasions," Barty said.

"I was pretty clear on what she was trying to do to me, and how I had to move past it."

Up next for Barty will be No.7 seed Kiki Bertens, who served 14 aces and needed three sets to defeat Viktoria Kuzmova in her third round match, 3-6, 6-0, 6-1.

The two faced off in an epic semifinal at the Sydney International to begin the season, where Barty rallied from a set down to win a 6-7(4), 6-4, 7-5 thriller to reach the final.

"You know what you're going to get with Kiki. She's one of the ultimate competitors. She's coming into some of the best tennis of her life, cracking into the Top 10 and being very, very consistent," Barty assessed.

"We had a hell of a match in Sydney earlier this year and...I'm sure it won't be much different."