Bernd Karbacher defeated Christian Bergstrom 7-6 6-3 in the Hamburg round of 32 on clay. The upset overturned the form book — Christian Bergstrom came in defending last year's round of 32.
Karbacher B. took it in straight sets.
Karbacher B. and Bergstrom C. faced 1 of the same opponent in the last 12 months. Karbacher B. went 0–1 (0%) against them, Bergstrom C. 1–0 (100%).
Only 1 common opponent — too few for any conclusion. Shown without assessment.
Bernd Karbacher beat Christian Bergstrom 7-6(2) 6-3. Umpiry, "Bernd Karbacher vs Christian Bergstrom — Hamburg Round of 32", https://umpiry.com/match/1993-05-03/bergstrom-vs-karbacher-hamburg-r32?utm_source=cite (as of 3 May 1993).