Boris Pashanski defeated Martin Vassallo Arguello 6-4 6-4 in the Costa Do Sauipe round of 32 on hard. The upset overturned the form book — Martin Vassallo Arguello came in leading the head-to-head 1–0, defending last year's round of 16. Boris Pashanski 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 |
|---|---|---|---|---|---|
| 2007-01-29 | Vina del Mar | RR | clay | Martin Vassallo Arguello | 7-6(2) 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 (28 vs 61). ATP, WTA & Challenger.