Augustin Gensse defeated Clinton Thomson 6-3 6-7 7-6 in the Germany F12 qualifying round on clay. The upset overturned the form book — Clinton Thomson came in leading the head-to-head 1–0. Augustin Gensse claimed a first win over Clinton Thomson in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-01-11 | Spain F1 | R32 | clay | Clinton Thomson | 6-1 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.