Tomas Buchhass defeated Matias Zukas 3-6 6-3 7-5 in the Argentina F12 round of 32 on clay. The upset overturned the form book — Matias Zukas came in leading the head-to-head 1–0. Tomas Buchhass claimed a first win over Matias Zukas in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-05-06 | Argentina F5 | Q16 | clay | Matias Zukas | 6-0 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.