Michel Kratochvil defeated Patrick Sommer 6-3 7-6 in the Denmark Masters 3 round of 16 on clay. The upset overturned the form book — Patrick Sommer came in leading the head-to-head 2–0. Michel Kratochvil claimed a first win over Patrick Sommer in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-07-20 | Austria F6 | R16 | clay | Patrick Sommer | 6-4 4-6 6-4 |
| 1996-10-19 | Switzerland 2 Masters 3 | R32 | carpet | Patrick Sommer | 6-2 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.