Carlos Poch Gradin defeated David Marrero 6-2 6-1 in the Spain 4 1 round of 16 on clay. The upset overturned the form book — David Marrero came in leading the head-to-head 2–0. Carlos Poch Gradin claimed a first win over David Marrero in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-02-28 | Spain 2 1 | R16 | clay | David Marrero | 6-3 6-3 |
| 2004-07-19 | Spain F15 | R16 | clay | David Marrero | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.