Niels Desein defeated Lamine Ouahab 7-5 6-4 in the Spain F16 round of 16 on clay. The upset overturned the form book — Lamine Ouahab came in leading the head-to-head 2–0. Niels Desein claimed a first win over Lamine Ouahab in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-05-28 | Morocco F2 | SF | clay | Lamine Ouahab | 6-1 3-6 6-2 |
| 2009-05-19 | Roland Garros | Q128 | clay | Lamine Ouahab | 7-6(7) 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.