Patrick Sommer defeated Matthias Muller 6-0 7-5 in the Turkey 2 Masters 4 round of 32 on hard. The upset overturned the form book — Matthias Muller came in leading the head-to-head 1–0. Patrick Sommer claimed a first win over Matthias Muller in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-03-01 | Egypt 1 Masters 4 | R16 | clay | Matthias Muller | 7-6 6-1 |