Ralph Grambow defeated Philipp Piyamongkol 7-6 6-4 in the Germany 1 Satellite 2 round of 16 on carpet. Ralph Grambow extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-03-06 | Canada F1 | R32 | hard | Ralph Grambow | 6-7(5) 6-3 6-3 |
| 2005-10-03 | Germany 1 Satellite 3 | R32 | carpet | Philipp Piyamongkol | 6-4 6-2 |