Thomas Gollwitzer defeated Paul Dogger 7-6 5-7 7-5 in the Czechoslovakia Masters 1 round of 16 on clay. The result followed the form book — Thomas Gollwitzer came in leading the head-to-head 1–0. Thomas Gollwitzer extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-08-26 | Czechoslovakia Masters 2 | F | clay | Thomas Gollwitzer | 6-4 6-2 |