Ronald Dueller defeated Andrew Nisker 6-3 6-2 in the Central America 4 qualifying round on hard.
Dueller R. took it in straight sets.
Ronald Dueller beat Andrew Nisker 6-3 6-2. Umpiry, "Ronald Dueller vs Andrew Nisker — Central America 4 Qualifying Round", https://umpiry.com/match/2002-01-07/dueller-vs-nisker-central-america-4-qf?utm_source=cite (as of 7 January 2002).