Valentin Frieden defeated Tom Kempers 4-6 6-4 6-3 in the Switzerland Masters 4 round of 16 on carpet. The upset overturned the form book — Tom Kempers came in leading the head-to-head 1–0. Valentin Frieden claimed a first win over Tom Kempers in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-10-23 | Switzerland Masters 3 | R32 | carpet | Tom Kempers | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.