Igor Kornienko defeated Ronald Dueller 6-1 6-1 in the Poland Masters 2 round of 16 on clay.
Kornienko I. took it in straight sets.
Igor Kornienko beat Ronald Dueller 6-1 6-1. Umpiry, "Igor Kornienko vs Ronald Dueller — Poland Masters 2 Round of 16", https://umpiry.com/match/1993-06-27/dueller-vs-kornienko-poland-masters-2-r16?utm_source=cite (as of 27 June 1993).