Carlos Costa defeated Sjeng Schalken 6-2 6-1 in the Barcelona round of 64 on clay. The upset overturned the form book — Sjeng Schalken came in leading the head-to-head 1–0. Carlos Costa claimed a first win over Sjeng Schalken in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-01-05 | Doha | R16 | hard | Sjeng Schalken | 7-5 2-6 7-6(5) |
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 (98 vs 200). ATP, WTA & Challenger.