Shuai Zhang defeated Alison Riske 6-3 4-6 7-6 in the Beijing round of 32 on hard. The result followed the form book — Shuai Zhang came in defending last year's round of 64. Shuai Zhang moved ahead in the head-to-head, 2–1.
Zhang S. came through in three sets.
Zhang S. and Riske A. faced 3 of the same opponents in the last 12 months. Zhang S. went 4–2 (67%) against them, Riske A. 0–3 (0%). Zhang S. came out better against 3 of 3 comparable opponents, Riske A. against 0 — though 1 of those edges carries caveats (retirement).
Only 3 common opponents — small sample, treat as indicative.
Shuai Zhang beat Alison Riske 6-3 4-6 7-6(4). Umpiry, "Shuai Zhang vs Alison Riske — Beijing Round of 32", https://umpiry.com/match/2016-10-04/riske-vs-zhang-beijing-r32?utm_source=cite (as of 4 October 2016).