Bethanie Mattek Sands defeated Stefanie Voegele 6-4 6-4 in the Beijing qualifying round of 16 on hard. The upset overturned the form book — Stefanie Voegele came in leading the head-to-head 1–0, defending last year's round of 64. Bethanie Mattek Sands claimed a first win over Stefanie Voegele in two meetings, levelling the head-to-head at 1–1.
Mattek Sands B. took it in straight sets.
Mattek Sands B. and Voegele S. faced 3 of the same opponents in the last 12 months. Mattek Sands B. went 1–2 (33%) against them, Voegele S. 1–2 (33%). Results against comparable opponents are close (1 : 1 better-results split).
Only 3 common opponents — small sample, treat as indicative.
Bethanie Mattek Sands beat Stefanie Voegele 6-4 6-4. Umpiry, "Bethanie Mattek Sands vs Stefanie Voegele — Beijing Qualifying Round of 16", https://umpiry.com/match/2014-09-27/sands-vs-voegele-beijing-q16?utm_source=cite (as of 27 September 2014).