Francisco Clavet defeated Mark Nielsen 6-0 6-4 in the NZL vs ESP round robin on hard.
Clavet F. took it in straight sets.
Francisco Clavet beat Mark Nielsen 6-0 6-4. Umpiry, "Francisco Clavet vs Mark Nielsen — NZL vs ESP Round Robin", https://umpiry.com/match/1999-09-24/clavet-vs-nielsen-nzl-vs-esp-rr?utm_source=cite (as of 24 September 1999).