German Puentes defeated Ruben Merchan 6-2 6-3 in the Spain 6 3 round of 16 on clay. German Puentes extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-04-04 | Turkey 1 3 | R16 | clay | German Puentes | 6-1 6-2 |
| 2004-03-01 | Spain 2 4 | R32 | clay | Ruben Merchan | 7-5 6-1 |