Luis Herrera defeated Ronald Dueller 6-4 6-4 in the Mexico 4 Masters 2 qualifying round on hard.
Herrera L. took it in straight sets.
Luis Herrera beat Ronald Dueller 6-4 6-4. Umpiry, "Luis Herrera vs Ronald Dueller — Mexico 4 Masters 2 Qualifying Round", https://umpiry.com/match/1996-10-05/dueller-vs-herrera-mexico-4-masters-2-qf?utm_source=cite (as of 5 October 1996).