Dong Hwan Lee defeated Roland So 6-4 6-1 in the Philippines Thailand Masters 2 round of 32 on hard.
Lee D. took it in straight sets.
Dong Hwan Lee beat Roland So 6-4 6-1. Umpiry, "Dong Hwan Lee vs Roland So — Philippines Thailand Masters 2 Round of 32", https://umpiry.com/match/1991-02-09/lee-vs-so-philippines-thailand-masters-2-r32?utm_source=cite (as of 9 February 1991).