Paul Dogger defeated Bernd Karbacher 6-1 1-6 7-6 in the Spain 1 Masters 4 qualifying round on hard.
Dogger P. came through in three sets.
Paul Dogger beat Bernd Karbacher 6-1 1-6 7-6. Umpiry, "Paul Dogger vs Bernd Karbacher — Spain 1 Masters 4 Qualifying Round", https://umpiry.com/match/1991-01-05/dogger-vs-karbacher-spain-1-masters-4-qf?utm_source=cite (as of 5 January 1991).