Miguel Pastura defeated Roberto Alvarez 6-2 6-2 in the Argentina 3 Masters 1 round of 16 on clay. The upset overturned the form book — Roberto Alvarez came in leading the head-to-head 3–1. Miguel Pastura narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-10-26 | Argentina F5 | SF | clay | Roberto Alvarez | 4-6 6-1 6-2 |
| 1998-10-12 | Argentina F3 | F | clay | Roberto Alvarez | 7-6 1-0 |
| 1997-11-01 | Uruguay Masters 1 | R16 | clay | Roberto Alvarez | 6-0 6-4 |
| 1993-03-27 | Morocco Masters 3 | R32 | clay | Miguel Pastura | 6-3 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.