Stosur racked up 16 break points against the Italian, converting five, while Errani only managed two on the Australian's big serve.
Stosur trails Dementieva 4-1 in their career series but said she couldn't be happier with her game as she enters the second week at Flushing Meadows for the first time in seven attempts.
"There's nothing that I'm going to have to go out and work on or think that I need to drastically improve," she said.
"Just keep everything and the usual things, serve well, return well. If you can do those, then I think you've got a good chance."
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2020-09-15
2020-09-15
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