Sang Oh Oh defeated Seon Yong Han 6-3 6-3 in the Korea F1 qualifying round of 32 on hard.
Oh Oh S. took it in straight sets.
Sang Oh Oh beat Seon Yong Han 6-3 6-3. Umpiry, "Sang Oh Oh vs Seon Yong Han — Korea F1 Qualifying Round of 32", https://umpiry.com/match/2015-05-18/han-vs-oh-korea-f1-q32?utm_source=cite (as of 18 May 2015).