Matias Zukas defeated Tomas Buchhass 6-0 6-2 in the Argentina F5 qualifying round of 16 on clay. The upset overturned the form book — Tomas Buchhass came in leading the head-to-head 1–0. Matias Zukas claimed a first win over Tomas Buchhass in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-07-15 | Argentina F12 | R32 | clay | Tomas Buchhass | 3-6 6-3 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.