Dennis Biggemann defeated Bogdan Leonte 7-6 7-5 in the Mexico F15 round of 16 on hard. The upset overturned the form book — Bogdan Leonte came in leading the head-to-head 1–0. Dennis Biggemann claimed a first win over Bogdan Leonte in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-08-29 | Sudan F1 | R32 | clay | Bogdan Leonte | 6-4 6-3 |