Walter Orth defeated Marco Chiudinelli 7-6 6-2 in the Switzerland Satellite 4 round of 16 on clay. The upset overturned the form book — Marco Chiudinelli came in leading the head-to-head 2–0. Walter Orth claimed a first win over Marco Chiudinelli in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-08-27 | Switzerland 2 2 | R16 | clay | Marco Chiudinelli | 6-2 6-3 |
| 2000-10-16 | Switzerland 3 Masters 4 | R16 | carpet | Marco Chiudinelli | 6-0 7-6(2) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.