Adam Kellner defeated Gyorgy Balazs 6-4 6-2 in the Hungary F5 round of 16 on clay. The upset overturned the form book — Gyorgy Balazs came in leading the head-to-head 1–0. Adam Kellner claimed a first win over Gyorgy Balazs in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-09-26 | Hungary F3 | R32 | clay | Gyorgy Balazs | 1-6 6-3 6-4 |