Fabio Colangelo defeated Martin Vacek 6-3 6-1 in the Czech Rep F4 round of 32 on hard. The upset overturned the form book — Martin Vacek came in leading the head-to-head 1–0. Fabio Colangelo claimed a first win over Martin Vacek in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-09-11 | Switzerland F6 | QF | clay | Martin Vacek | 7-5 |