Jeroen Masson defeated David Guez 6-7 6-4 6-2 in the Belgium F2 round of 16 on hard. The upset overturned the form book — David Guez came in leading the head-to-head 1–0. Jeroen Masson claimed a first win over David Guez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-02-28 | Portugal F2 | SF | hard | David Guez | 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.