Julian Alonso defeated Juan Antonio Marin 7-6 7-5 in the Mallorca quarter-final on grass. The upset overturned the form book — Juan Antonio Marin came in leading the head-to-head 3–1, defending last year's round of 16. Julian Alonso narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-06-08 | Bologna | SF | clay | Julian Alonso | 7-5 6-3 |
| 1998-04-06 | Estoril | R16 | clay | Juan Antonio Marin | 6-2 6-4 |
| 1997-01-03 | Spain 1 Masters 1 | SF | clay | Juan Antonio Marin | 6-4 6-4 |
| 1997-01-03 | Spain 1 Masters 2 | R16 | clay | Juan Antonio Marin | 6-3 6-3 |
Averages over each player's completed matches in the selected window (32 vs 122). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About