Sean Thornley defeated Alexander Slabinsky 7-6 7-6 in the Great Britain F7 round of 32 on clay. The upset overturned the form book — Alexander Slabinsky came in leading the head-to-head 3–0. Sean Thornley claimed a first win over Alexander Slabinsky in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-07-02 | Great Britain F9 | R16 | grass | Alexander Slabinsky | 6-2 7-5 |
| 2011-06-11 | Eastbourne | Q16 | grass | Alexander Slabinsky | 7-6(5) 6-3 |
| 2010-06-28 | Great Britain F8 | R32 | grass | Alexander Slabinsky | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.