Nicolas Massu defeated Oliver Marach 6-4 6-2 in the Central America Masters 4 round of 32 on clay.
Massu N. took it in straight sets.
Nicolas Massu beat Oliver Marach 6-4 6-2. Umpiry, "Nicolas Massu vs Oliver Marach — Central America Masters 4 Round of 32", https://umpiry.com/match/1998-01-10/marach-vs-massu-central-america-masters-4-r32?utm_source=cite (as of 10 January 1998).