Naomi Osaka defeated Heather Watson 6-2 6-3 in the GBR vs JPN round robin on hard. The result followed the form book — Naomi Osaka came in ranked #17, leading the head-to-head 1–0. Naomi Osaka extended the head-to-head to 2–0.
Osaka N. took it in straight sets.
Osaka N. and Watson H. faced 10 of the same opponents in the last 12 months. Osaka N. went 4–8 (33%) against them, Watson H. 4–8 (33%). Results against comparable opponents are close (2 : 1 better-results split).
Naomi Osaka beat Heather Watson 6-2 6-3. Umpiry, "Naomi Osaka vs Heather Watson — GBR vs JPN Round Robin", https://umpiry.com/match/2018-04-21/osaka-vs-watson-gbr-vs-jpn-rr?utm_source=cite (as of 21 April 2018).