Keivon Tabrizi defeated Matthieu Vierin 6-0 3-6 6-4 in the Switzerland F5 q32 on clay. The upset overturned the form book — Matthieu Vierin came in leading the head-to-head 1–0, but Keivon Tabrizi had been the form player, winning 3 of their last 8 on clay. Keivon Tabrizi claimed a first win over Matthieu Vierin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-08-26 | Switzerland F6 | R32 | clay | Matthieu Vierin | 5-7 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.