Ryuso Tsujino defeated Dae Sung Jin 7-6 7-5 in the Korea Masters 3 qualifying round on clay.
Tsujino R. took it in straight sets.
Ryuso Tsujino beat Dae Sung Jin 7-6 7-5. Umpiry, "Ryuso Tsujino vs Dae Sung Jin — Korea Masters 3 Qualifying Round", https://umpiry.com/match/1991-05-20/jin-vs-tsujino-korea-masters-3-qf?utm_source=cite (as of 20 May 1991).