Thiemo Maier defeated Christopher Kas 6-1 6-4 in the Slovak Republic Masters 2 round of 32 on clay. The upset overturned the form book — Christopher Kas came in leading the head-to-head 1–0. Thiemo Maier claimed a first win over Christopher Kas in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-08-20 | Italy 4 3 | R16 | clay | Christopher Kas | 0-6 6-2 6-2 |