Lukas Thomas defeated Rene Hanak 6-1 6-0 in the Poland 1 Masters 2 round of 16 on clay. The upset overturned the form book — Rene Hanak came in leading the head-to-head 1–0. Lukas Thomas claimed a first win over Rene Hanak in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-08-26 | Czechoslovakia Masters 4 | R32 | clay | Rene Hanak | 6-3 1-2 |