Shiho Akita defeated Junri Namigata 6-3 6-1 in the Osaka quarter-final on hard. The upset overturned the form book — Junri Namigata came in leading the head-to-head 3–1. Shiho Akita narrowed the head-to-head to 3–2.
Akita S. took it in straight sets.
Hard: Akita S. leads 2–0 · Carpet: Namigata J. leads 3–0
Shiho Akita beat Junri Namigata 6-3 6-1. Umpiry, "Shiho Akita vs Junri Namigata — Osaka Quarter-final", https://umpiry.com/match/2018-04-13/akita-vs-namigata-osaka-qf?utm_source=cite (as of 13 April 2018).