Victoria Duval advanced when Di Zhao retired 6-2 1-0 in the Sumter SC 10K semi-final.
Duval V. advanced when Zhao D. retired.
Victoria Duval beat Di Zhao 6-2 1-0 after Di Zhao retired. Umpiry, "Victoria Duval vs Di Zhao — Sumter SC 10K Semi-final", https://umpiry.com/match/2012-05-21/duval-vs-zhao-sumter-sc-10k-sf?utm_source=cite (as of 21 May 2012).