Ji Hoon Son defeated Sang Oh Oh 7-5 6-4 in the Korea F4 round of 32 on hard. The result followed the form book — Ji Hoon Son came in leading the head-to-head 1–0. Ji Hoon Son extended the head-to-head to 2–0.
Hoon Son J. took it in straight sets.
Ji Hoon Son beat Sang Oh Oh 7-5 6-4. Umpiry, "Ji Hoon Son vs Sang Oh Oh — Korea F4 Round of 32", https://umpiry.com/match/2015-08-17/oh-vs-son-korea-f4-r32?utm_source=cite (as of 17 August 2015).