Dukyoung Kim defeated Dong Hak Sin 7-6 7-6 in the Korea F7 qualifying round of 64 on hard.
Kim D. took it in straight sets.
Dukyoung Kim beat Dong Hak Sin 7-6(5) 7-6(6). Umpiry, "Dukyoung Kim vs Dong Hak Sin — Korea F7 Qualifying Round of 64", https://umpiry.com/match/2013-06-17/kim-vs-sin-korea-f7-q64?utm_source=cite (as of 17 June 2013).