New South Wales 7 for 302 (Litchfield 107, Wilson 101) beat Western Australia 244 (Piparo, Darke 51, Brown 3-60) by 58 runs
The pair added 195 for the second wicket, a New South Wales record, which put the home side on course for a total that proved far too much after Western Australia's second-wicket stand of 78 between Chloe Piparo and Maddy Darke had been broken.
Litchfield, the left-hander who is tipped to soon play for Australia, was first to the landmark from 102 balls with a perfect straight drive, fitting for an innings that had showcased her timing and placement. Shortly after Litchfield was taken at mid-off, Wilson followed with her hundred coming from 125 balls.
Ash Gardner and Erin Burns both scored briskly and New South Wales crossed 300 in the final over.
They were building a base from where the target may have been in reach, but Sammy-Jo Johnson struck in consecutive overs and Cheatle removed Darke shortly after her half-century. A ninth-wicket stand of 80 between Piepa Cleary and Taneale Peschel narrowed the margin.