Stadium: Court Central Round: 29 Ground: Hardcourt indoor
| ITF - M15 Bressuire | 2019/01/18 13:00 | Mertens, Yannick v Mitjana, Leny | 6-7,5-7 |
| ITF - M15 Grenoble | 2019/02/09 15:45 | Mitjana, Leny v Geoffrey Blancaneaux | 6-2,7-6 |
| ITF - M15 Grenoble | 2019/02/08 15:55 | Mitjana, Leny v Clement Tabur | 3-6,6-3,7-5 |
| ITF - M15 Grenoble | 2019/02/07 15:40 | Mitjana, Leny v Anselmo, Baptiste | 6-4,6-2 |
| ITF - M15 Grenoble | 2019/02/05 12:20 | Arthur Rinderknech v Mitjana, Leny | 4-6,4-6 |
| ITF - M15 Veigy-Foncenex | 2019/01/24 09:00 | Heyman, Christopher v Mitjana, Leny | 6-3,3-6,6-1 |
| ITF - M15 Veigy-Foncenex | 2019/01/23 11:50 | van Der Horst, Tim v Mitjana, Leny | 2-6,2-6 |
| ITF - M15 Bressuire | 2019/01/20 15:00 | Dubrivnyy, Artem v Mitjana, Leny | 6-7,4-6 |
| ITF - M15 Bressuire | 2019/01/19 14:00 | Mitjana, Leny v Niels Lootsma | 6-1,6-4 |
| ITF - M15 Grenoble | 2019/02/09 14:30 | Matteo Martineau v Mertens, Yannick | 3-6,4-6 |
| ITF - M15 Grenoble | 2019/02/08 10:00 | Yanais Laurent v Mertens, Yannick | 3-6,3-6 |
| ITF - M15 Grenoble | 2019/02/07 11:40 | Ugo Blanchet v Mertens, Yannick | 6-3,4-6,4-6 |
| ITF - M15 Grenoble | 2019/02/06 10:00 | Bernabe, Arthur v Mertens, Yannick | 1-6,0-6 |
| ITF - M15 Sharm El Sheikh | 2019/01/31 09:45 | Mertens, Yannick v Vivero Gonzalez, Pablo | 2-6,6-4,2-6 |
| ITF - M15 Sharm El Sheikh | 2019/01/30 12:15 | Mertens, Yannick v Yu Hsiou Hsu | 6-3,6-0 |
| Challenger Rennes | 2019/01/24 15:35 | Elias Ymer v Mertens, Yannick | 6-3,6-4 |
| Challenger Rennes | 2019/01/23 17:05 | Evgeny Karlovskiy v Mertens, Yannick | 3-6,6-7 |