Victor Sendin defeated Mark Joachim 7-5 6-1 in the Spain 4 Masters 1 qualifying round on clay. The upset overturned the form book — Mark Joachim came in leading the head-to-head 1–0. Victor Sendin claimed a first win over Mark Joachim in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-04-03 | Spain 4 Masters 2 | R16 | clay | Mark Joachim | 6-2 6-3 |