Marcelo Palacios Siegenthale defeated Gerard Granollers 6-4 5-7 6-1 in the Spain F10 qualifying round on clay. The upset overturned the form book — Gerard Granollers came in leading the head-to-head 2–1. Marcelo Palacios Siegenthale narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-05-17 | Spain F17 | R32 | clay | Gerard Granollers | 6-4 6-0 |
| 2009-07-27 | Spain F25 | QF | clay | Gerard Granollers | 5-7 7-5 6-3 |
| 2009-02-23 | Spain F7 | R32 | clay | Marcelo Palacios Siegenthale | 3-6 6-3 7-6(4) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.