Marc Kevin Goellner defeated Michael Chang 5-7 6-4 6-3 in the Hamburg round of 32 on clay. The upset overturned the form book — Michael Chang came in defending last year's round of 16.
Goellner M. came through in three sets.
Goellner M. and Chang M. faced 1 of the same opponent in the last 12 months. Goellner M. went 0–1 (0%) against them, Chang M. 1–0 (100%).
Only 1 common opponent — too few for any conclusion. Shown without assessment.
Marc Kevin Goellner beat Michael Chang 5-7 6-4 6-3. Umpiry, "Marc Kevin Goellner vs Michael Chang — Hamburg Round of 32", https://umpiry.com/match/1993-05-03/chang-vs-goellner-hamburg-r32?utm_source=cite (as of 3 May 1993).