Hernan Casanova defeated Guilherme Clezar 6-1 6-3 in the Buenos Aires CH round of 64 on clay. The upset overturned the form book — Guilherme Clezar came in leading the head-to-head 1–0, defending last year's quarter-final, but Hernan Casanova had been the form player, winning 5 of their last 10 on clay. Hernan Casanova claimed a first win over Guilherme Clezar in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-03-01 | Buenos Aires | Q1 | clay | Guilherme Clezar | 1-6 6-3 6-3 |
Averages over each player's completed matches in the selected window (200 vs 100). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About