Vladimir Platenik defeated Helge Koll 6-4 3-6 6-3 in the Denmark Masters 3 round of 16 on clay. The upset overturned the form book — Helge Koll came in leading the head-to-head 1–0. Vladimir Platenik claimed a first win over Helge Koll in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-10-18 | Switzerland 2 Masters 2 | R32 | carpet | Helge Koll | 7-6 2-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.