Horacio Zeballos defeated Gerald Melzer 6-3 7-6 in the Buenos Aires CH semi-final on clay. The upset overturned the form book — Gerald Melzer came in leading the head-to-head 1–0, defending last year's quarter-final. Horacio Zeballos claimed a first win over Gerald Melzer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-02-06 | Quito | R32 | clay | Gerald Melzer | 6-7(4) 6-3 7-6(4) |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (92 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About