Marko Tkalec defeated Michael Lammer 6-3 6-7 6-4 in the Basel q16 on hard. The upset overturned the form book — Michael Lammer came in leading the head-to-head 1–0. Marko Tkalec claimed a first win over Michael Lammer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-04-24 | Germany F1 | R16 | clay | Michael Lammer | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.