Horacio Zeballos defeated Juan Martin del Potro 6-4 6-4 in the Miami Masters round of 64 on hard. The upset overturned the form book — Juan Martin del Potro came in leading the head-to-head 1–0, defending last year's round of 128. Horacio Zeballos claimed a first win over Juan Martin del Potro in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-04-25 | Argentina F3 | QF | clay | Juan Martin del Potro | 6-1 6-7(5) 6-4 |
Averages over each player's completed matches in the selected window (163 vs 177). 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