Zeynep Sönmez and Tatjana Maria advanced to the third round of the doubles competition at the tournament in New York.
Facing the third-seeded pairing of Kazakhstan's Anna Danilina and Serbia's Aleksandra Krunic in the second round, the Zeynep Sönmez-Tatjana Maria pair lost the first set 6-1.
Leading 6-5 in the second set, Zeynep Sönmez and Tatjana Maria won the match by walkover after Aleksandra Krunic was injured.
The pair will face Robin Montgomery and Ashlyn Krueger of the United States in the third round.