Min Hyoek Cho defeated Dong Hak Sin 6-4 6-0 in the Korea F4 round of 32 on hard.
Hyoek Cho M. took it in straight sets.
Min Hyoek Cho beat Dong Hak Sin 6-4 6-0. Umpiry, "Min Hyoek Cho vs Dong Hak Sin — Korea F4 Round of 32", https://umpiry.com/match/2017-06-19/cho-vs-sin-korea-f4-r32?utm_source=cite (as of 19 June 2017).