Martin Vassallo Arguello defeated Boris Pashanski 7-6 6-4 in the Vina del Mar round robin on clay. The upset overturned the form book — Boris Pashanski came in leading the head-to-head 1–0, defending last year's quarter-final. Martin Vassallo Arguello claimed a first win over Boris Pashanski in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-02-11 | Costa Do Sauipe | R32 | hard | Boris Pashanski | 6-4 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 46). ATP, WTA & Challenger.