Carlos Costa defeated Gustavo Kuerten 6-4 6-3 in the Barcelona round of 32 on clay. The upset overturned the form book — Gustavo Kuerten came in leading the head-to-head 2–0, defending last year's round of 64. Carlos Costa claimed a first win over Gustavo Kuerten in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-07-20 | Stuttgart Outdoor | R16 | clay | Gustavo Kuerten | 6-2 6-4 |
| 1998-05-11 | Rome Masters | R64 | clay | Gustavo Kuerten | 1-6 6-4 6-2 |
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 (55 vs 200). ATP, WTA & Challenger.