Erika Sema advanced when Xiaodi You retired 6-2 2-4 in the Nanchang qualifying round.
Sema E. advanced when You X. retired.
Erika Sema beat Xiaodi You 6-2 2-4 after Xiaodi You retired. Umpiry, "Erika Sema vs Xiaodi You — Nanchang Qualifying Round", https://umpiry.com/match/2015-07-27/sema-vs-you-nanchang-qf?utm_source=cite (as of 27 July 2015).