Dae Soung Oh defeated Dong Hak Sin 2-6 6-3 6-2 in the Korea F4 qualifying round of 16 on hard.
Soung Oh D. came through in three sets.
Dae Soung Oh beat Dong Hak Sin 2-6 6-3 6-2. Umpiry, "Dae Soung Oh vs Dong Hak Sin — Korea F4 Qualifying Round of 16", https://umpiry.com/match/2015-08-17/oh-vs-sin-korea-f4-q16?utm_source=cite (as of 17 August 2015).