David Guez defeated Jeroen Masson 7-5 6-2 in the Portugal F2 semi-final on hard. The upset overturned the form book — Jeroen Masson came in leading the head-to-head 1–0. David Guez claimed a first win over Jeroen Masson in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-11-01 | Belgium F2 | R16 | hard | Jeroen Masson | 6-7(5) 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.