Cheong Eui Kim defeated Yunseong Chung 7-5 7-6 in the Korea F4 qualifying round on hard. The result followed the form book — Cheong Eui Kim came in leading the head-to-head 3–0. Cheong Eui Kim extended the head-to-head to 4–0.
Kim C. took it in straight sets.
Hard: Kim C. leads 3–0 · Clay: Kim C. leads 1–0
Cheong Eui Kim beat Yunseong Chung 7-5 7-6(11). Umpiry, "Cheong Eui Kim vs Yunseong Chung — Korea F4 Qualifying Round", https://umpiry.com/match/2017-06-19/chung-vs-kim-korea-f4-qf?utm_source=cite (as of 19 June 2017).