Kurumi Nara defeated Naomi Osaka 6-3 6-0 in the Tokyo round of 32 on hard. The upset overturned the form book — Naomi Osaka came in leading the head-to-head 1–0, defending last year's final. Kurumi Nara claimed a first win over Naomi Osaka in two meetings, levelling the head-to-head at 1–1.
Nara K. took it in straight sets.
Nara K. and Osaka N. faced 6 of the same opponents in the last 12 months. Nara K. went 2–5 (29%) against them, Osaka N. 5–2 (71%). Osaka N. came out better against 3 of 6 comparable opponents, Nara K. against 0.
Hard: Nara K. leads 1–0 · Grass: Osaka N. leads 1–0
Kurumi Nara beat Naomi Osaka 6-3 6-0. Umpiry, "Kurumi Nara vs Naomi Osaka — Tokyo Round of 32", https://umpiry.com/match/2017-09-11/nara-vs-osaka-tokyo-r32?utm_source=cite (as of 11 September 2017).