Dae Soung Oh defeated Soong Jae Cho 6-4 6-4 in the Korea F1 qualifying round of 16 on hard.
Soung Oh D. took it in straight sets.
Dae Soung Oh beat Soong Jae Cho 6-4 6-4. Umpiry, "Dae Soung Oh vs Soong Jae Cho — Korea F1 Qualifying Round of 16", https://umpiry.com/match/2015-05-18/cho-vs-oh-korea-f1-q16?utm_source=cite (as of 18 May 2015).