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The Perth Scorchers made it four wins in as many matches, defeating the Sydney Thunder by 34 runs at Sydney Showground Stadium on Sunday.
The team in orange will however face a nervous wait on scans for captain and star all-rounder Sophie Devine, who left the field late in the match with a back injury.
The Scorchers won the toss and chose to bat first, posting 8-131 from their 20 overs, set up the batting efforts of top three Devine (45), Beth Mooney (26) and Chloe Piparo (30).
The Thunder pulled things back late in the piece as Hannah Darlington claimed three wickets and Sam Bates two to keep the Scorchers total to a manageable one for their batting effort.
The opening two wickets went down in the first two overs of the chase, star players Tammy Beaumont (1) and Rachael Haynes (6) falling to Nicole Bolton and Taneale Peschel respectively, Haynes bowled by a peach of a delivery from the young right arm seam bowler that knocked back the off stump.
Only number three Heather Knight resisted for any length of time in making a run a ball 44, but she lacked support as regular wickets fell to stymie the chase.
The home side was all out for 97 in 18.3 overs, Heather Graham the pick of the bowlers with 3-22 including the big wicket of Knight.
Bolton and Devine each claimed two wickets, but the Scorchers skipper and star all-rounder left the field after the final ball of her third over with what appeared to be a back injury.
The clubs will play four games across the next seven days to round out the tournament, meaning Perth could be without their star player for the remainder of the home and away campaign.
The result moves Perth in to second spot having played ten matches, now four straight wins after an indifferent start to the WBBL 06 campaign.
The Scorchers face the Melbourne Stars in a top of the table clash at Hurstville Oval on Tuesday.
IMAGE: ESPN Cricinfo.