Antonio Couvert defeated Diego Junqueira 6-3 6-3 in the Argentina 1 Masters 1 round of 16 on clay. The upset overturned the form book — Diego Junqueira came in leading the head-to-head 1–0. Antonio Couvert claimed a first win over Diego Junqueira in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-07-31 | Argentina 2 Masters 1 | R32 | clay | Diego Junqueira | 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.