Oscar Serrano defeated Juan Balcells 7-6 6-4 in the Spain 3 Masters 4 round of 32 on clay. The upset overturned the form book — Juan Balcells came in leading the head-to-head 4–1. Oscar Serrano narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-01-03 | Spain 1 Masters 1 | QF | clay | Juan Balcells | 6-1 6-4 |
| 1997-01-31 | Spain 2 Masters 4 | R32 | clay | Juan Balcells | 6-2 6-4 |
| 1996-03-01 | Spain 3 Masters 1 | R16 | clay | Oscar Serrano | 7-5 6-4 |
| 1996-03-01 | Spain 3 Masters 3 | QF | clay | Juan Balcells | 6-4 6-4 |
| 1996-02-02 | Spain 2 Masters 3 | R32 | clay | Juan Balcells | 6-2 6-4 |
Averages over each player's completed matches in the selected window (18 vs 87). 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