Martin Vassallo Arguello defeated Ezequiel Dequino 6-3 6-3 in the Argentina F7 round of 16 on clay. The result followed the form book — Martin Vassallo Arguello came in leading the head-to-head 1–0. Martin Vassallo Arguello extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-07-31 | Argentina 2 Masters 4 | R32 | clay | Martin Vassallo Arguello | 6-4 4-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.