Nam Hoon Kim defeated Ji Heon Im 6-4 6-0 in the Korea Masters 1 qualifying round on clay.
Hoon Kim N. took it in straight sets.
Nam Hoon Kim beat Ji Heon Im 6-4 6-0. Umpiry, "Nam Hoon Kim vs Ji Heon Im — Korea Masters 1 Qualifying Round", https://umpiry.com/match/1991-05-20/im-vs-kim-korea-masters-1-qf?utm_source=cite (as of 20 May 1991).