Michael Kohlmann defeated Johan Alven 6-4 6-3 in the Greece 1 Masters 3 round of 32 on hard. The upset overturned the form book — Johan Alven came in leading the head-to-head 1–0. Michael Kohlmann claimed a first win over Johan Alven in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-09-30 | Portugal 3 Masters 1 | QF | hard | Johan Alven | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.