David Marrero defeated Guillem Burniol 6-2 6-3 in the Spain F14 round of 16 on clay. The upset overturned the form book — Guillem Burniol came in leading the head-to-head 2–0. David Marrero claimed a first win over Guillem Burniol in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-01-22 | Spain F3 | R16 | hard | Guillem Burniol | 6-3 4-6 7-5 |
| 2004-11-01 | Spain F30 | R16 | clay | Guillem Burniol | 7-6(3) 3-6 6-3 |
Averages over each player's completed matches in the selected window (15 vs 1). 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. Small sample — read as indicative. About