Nicolas Kiefer defeated Juan Albert Viloca Puig 0-6 7-5 7-6 in the Gstaad round of 32 on clay. The upset overturned the form book — Juan Albert Viloca Puig came in leading the head-to-head 1–0, defending last year's final. Nicolas Kiefer claimed a first win over Juan Albert Viloca Puig in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-07-07 | Gstaad | QF | clay | Juan Albert Viloca Puig | 6-4 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 43). ATP, WTA & Challenger.