German Puentes defeated Oscar Martinez Dieguez 6-3 6-3 in the Spain 2 Masters 4 round of 16 on clay. German Puentes extended the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-02-26 | Spain 3 Masters 4 | QF | clay | Oscar Martinez Dieguez | 6-4 6-4 |
| 1997-10-17 | Spain 9 Masters 4 | QF | clay | German Puentes | 6-1 6-2 |
| 1993-08-13 | Spain 6 Masters 4 | SF | clay | Oscar Martinez Dieguez | 4-6 7-5 6-3 |
| 1993-05-14 | Spain 4 Masters 1 | R16 | clay | German Puentes | 3-6 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.