Sjeng Schalken defeated Hernan Gumy 6-3 6-4 in the St. Poelten round of 32 on clay. The upset overturned the form book — Hernan Gumy came in leading the head-to-head 1–0. Sjeng Schalken claimed a first win over Hernan Gumy in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-03-01 | Scottsdale | R32 | hard | Hernan Gumy | 3-6 7-5 6-1 |
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 30). ATP, WTA & Challenger.