Horst Skoff defeated Lars Jonsson 6-3 6-4 in the Vienna quarter-final on hard.
Skoff H. took it in straight sets.
Horst Skoff beat Lars Jonsson 6-3 6-4. Umpiry, "Horst Skoff vs Lars Jonsson — Vienna Quarter-final", https://umpiry.com/match/1990-10-15/jonsson-vs-skoff-vienna-qf?utm_source=cite (as of 15 October 1990).