Potito Starace defeated Martin Vassallo Arguello 7-5 6-3 in the Costa Do Sauipe round of 16 on hard. The upset overturned the form book — Martin Vassallo Arguello came in leading the head-to-head 1–0. Potito Starace claimed a first win over Martin Vassallo Arguello in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-03-25 | Miami Masters | R128 | hard | Martin Vassallo Arguello | 7-6(9) 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 (200 vs 91). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About