Seong Gook Oh defeated Shumpei Namba 6-3 6-2 in the Japan F8 qualifying round of 64 on carpet.
Gook Oh S. took it in straight sets.
Seong Gook Oh beat Shumpei Namba 6-3 6-2. Umpiry, "Seong Gook Oh vs Shumpei Namba — Japan F8 Qualifying Round of 64", https://umpiry.com/match/2016-06-13/namba-vs-oh-japan-f8-q64?utm_source=cite (as of 13 June 2016).