The top-ranked Australian let handy leads slip in both sets before recovering in time to claim the scrappy win in exactly an hour.
With the French Open fast approaching,Sam Stosur is in action in Strasbourg,while some compatriots had mixed fortunes in qualifying for Roland Garros.
Samantha Stosur reset after a 6-1 6-1 thrashing in the singles to clinch a finals berth in the decisive doubles rubber over Belarus in Brisbane.
Ashleigh Barty has drawn Australia level with Belarus in their Fed Cup semi-final in Brisbane,producing some top-drawer tennis to beat close friend Victoria Azarenka.
Ashleigh Barty has progressed to the fourth round of the Miami Open after winning her All-Australian showdown against Samantha Stosur in straight sets.
It was a case of back to the future for Sam Stosur after the former doubles world No. 1 partnered with China’s Zhang Shuai to claim the Australian Open women’s doubles title.
The dream run for Australians in the women's draw ended on Tuesday,with Destanee Aiava and Ajla Tomljanović losing their first-round matches.
The Australian saved nine break points in windy conditions to knock out the top-ranked Simona Halep and advance to the Sydney International quarter-finals.
The Australian pro beat Slovakia's Dominika Cibulková,who sits 44 places above her in the rankings.
Clay may be her favourite surface but Australia's Samantha Stosur wants to remind rivals she's still a hardcourt force this summer.
Turning 35 in March,Stosur has no plans on scaling back her singles schedule in favour of a cruisy,lucrative life on the doubles circuit.