Martin Vassallo Arguello defeated Albert Portas 4-6 6-3 6-2 in the Costa Do Sauipe qualifying round on hard. The upset overturned the form book — Albert Portas came in leading the head-to-head 2–1, defending last year's round of 32. Martin Vassallo Arguello narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-01-29 | Vina del Mar | RR | clay | Martin Vassallo Arguello | 6-1 6-1 |
| 2006-02-18 | Costa Do Sauipe | Q32 | hard | Albert Portas | 6-4 2-1 |
| 2004-08-09 | Sopot | R32 | clay | Albert Portas | 6-1 6-2 |
Averages over each player's completed matches in the selected window (109 vs 30). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About