Gregory Zavialoff defeated Ivan Navarro 6-3 2-6 6-2 in the Spain 5 Masters 1 round of 32 on clay. The upset overturned the form book — Ivan Navarro came in leading the head-to-head 2–0. Gregory Zavialoff claimed a first win over Ivan Navarro in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-05-07 | Spain 5 Masters 2 | R16 | clay | Ivan Navarro | 6-1 7-6 |
| 1998-05-08 | Spain 5 Masters 1 | R32 | clay | Ivan Navarro | 7-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.