Goran Ivanisevic defeated Michael Stich 7-6 7-6 in the Basel quarter-final on hard.
Ivanisevic G. took it in straight sets.
Goran Ivanisevic beat Michael Stich 7-6 7-6. Umpiry, "Goran Ivanisevic vs Michael Stich — Basel Quarter-final", https://umpiry.com/match/1990-09-24/ivanisevic-vs-stich-basel-qf?utm_source=cite (as of 24 September 1990).