Juan Albert Viloca Puig defeated Carlos Costa 6-4 6-3 in the Mexico City round of 16 on clay. The upset overturned the form book — Carlos Costa came in leading the head-to-head 2–0. Juan Albert Viloca Puig claimed a first win over Carlos Costa in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-04-06 | Estoril | R16 | clay | Carlos Costa | 6-2 3-6 6-2 |
| 1997-09-29 | Palermo | R32 | clay | Carlos Costa | 6-4 6-4 |
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 (88 vs 98). ATP, WTA & Challenger.