Mark Markov defeated Ronald Dueller 7-5 7-5 in the Austria 2 Masters 4 round of 32 on clay.
Markov M. took it in straight sets.
Mark Markov beat Ronald Dueller 7-5 7-5. Umpiry, "Mark Markov vs Ronald Dueller — Austria 2 Masters 4 Round of 32", https://umpiry.com/match/1995-06-10/dueller-vs-markov-austria-2-masters-4-r32?utm_source=cite (as of 10 June 1995).