Britain's Laura Robson is one win away from qualifying for the US Open after beating Bulgarian Isabella Shinikova.
The 22-year-old won 6-4 6-4 and will now face Germany's Tatjana Maria on Friday for a place in the first round at Flushing Meadows.
Robson now has seven victories in a row, having won an event in Landisville earlier this month.
Briton Tara Moore failed to reach the final round of qualifying, losing 1-6 6-3 6-2 to Germany's Antonia Lottner.
The draw for the first round takes place on Friday.
Britain's Andy Murray, Aljaz Bedene, Dan Evans, Kyle Edmund, Johanna Konta, Heather Watson and Naomi Broady will all feature.