Martin Vassallo Arguello defeated Marcel Granollers 6-4 6-3 in the Acapulco round of 16 on hard. The upset overturned the form book — Marcel Granollers came in leading the head-to-head 2–0, defending last year's quarter-final. Martin Vassallo Arguello claimed a first win over Marcel Granollers in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-02-01 | Santiago | R32 | clay | Marcel Granollers | 4-6 6-3 RET |
| 2009-07-19 | Hamburg | R64 | clay | Marcel Granollers | 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 (43 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About