Su Wei Hsieh defeated Qiang Wang 6-4 6-4 in the Hiroshima semi-final on hard. The upset overturned the form book — Qiang Wang came in leading the head-to-head 3–0, but Su Wei Hsieh had been the form player, winning 1 of their last 6 on hard. Su Wei Hsieh claimed a first win over Qiang Wang in four meetings, narrowing the head-to-head to 3–1.
Hsieh S. took it in straight sets.
Hsieh S. and Wang Q. faced 9 of the same opponents in the last 12 months. Hsieh S. went 6–3 (67%) against them, Wang Q. 4–6 (40%). Results against comparable opponents are close (2 : 1 better-results split).
Su Wei Hsieh beat Qiang Wang 6-4 6-4. Umpiry, "Su Wei Hsieh vs Qiang Wang — Hiroshima Semi-final", https://umpiry.com/match/2018-09-15/hsieh-vs-wang-hiroshima-sf?utm_source=cite (as of 15 September 2018).