Bernd Karbacher defeated Paul Dogger 7-5 7-5 in the Spain 1 Masters 1 round of 16 on hard. The upset overturned the form book — Paul Dogger came in leading the head-to-head 1–0. Bernd Karbacher claimed a first win over Paul Dogger in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-01-05 | Spain 1 Masters 4 | QF | hard | Paul Dogger | 6-1 1-6 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.