Ivan Esquerdo defeated Alexander Flock 6-1 6-4 in the Spain F4 qualifying round on hard. The upset overturned the form book — Alexander Flock came in leading the head-to-head 1–0. Ivan Esquerdo claimed a first win over Alexander Flock in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-04-07 | Spain F6 | R32 | clay | Alexander Flock | 4-6 7-6(5) 6-4 |