Kevin Kim defeated Mike Mather 6-3 6-3 in the USA 1 Masters 2 round of 16 on hard.
Kim K. took it in straight sets.
Kevin Kim beat Mike Mather 6-3 6-3. Umpiry, "Kevin Kim vs Mike Mather — USA 1 Masters 2 Round of 16", https://umpiry.com/match/1999-03-26/kim-vs-mather-usa-1-masters-2-r16?utm_source=cite (as of 26 March 1999).