David Sanchez defeated Andrea Gaudenzi 6-7 6-1 6-2 in the Vina del Mar quarter-final on clay. The upset overturned the form book — Andrea Gaudenzi came in leading the head-to-head 1–0, defending last year's round of 32. David Sanchez claimed a first win over Andrea Gaudenzi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-04-13 | Barcelona | R64 | clay | Andrea Gaudenzi | 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 (117 vs 8). ATP, WTA & Challenger.