Ralph Grambow defeated Oscar Sabate Bretos 1-6 6-3 6-2 in the Germany F6 round of 32 on clay. The upset overturned the form book — Oscar Sabate Bretos came in leading the head-to-head 1–0. Ralph Grambow claimed a first win over Oscar Sabate Bretos in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-05-14 | Greece F2 | R32 | hard | Oscar Sabate Bretos | 6-3 7-6(3) |