| ITF M15 Monastir | 02/13 08:30 | 28 | Yannick Mertens v Gauthier Onclin | 6-3,1-6,2-6 | |
| ITF M15 Monastir | 02/12 10:05 | 27 | Yannick Mertens v Juan Bautista Torres | 6-2,6-3 | |
| ITF M15 Monastir | 02/11 08:25 | 26 | Yannick Mertens v Lukas Mugevicius | 6-1,6-1 | |
| ITF M15 Monastir | 02/10 08:30 | 25 | Yannick Mertens v Stuart Parker | 5-7,6-4,6-3 | |
| ITF M15 Monastir | 02/07 08:30 | 29 | Yannick Mertens v Stuart Parker | 3-6,6-4,6-7 | |
| ITF M15 Monastir | 02/06 08:30 | 28 | Yannick Mertens v Tom Kocevar-Desman | 6-3,6-2 | |
| ITF M15 Monastir | 02/05 09:30 | 27 | [357] Skander Mansouri v Yannick Mertens [483] | 6-3,1-6,4-6 | |
| ITF M15 Monastir | 02/04 08:30 | 26 | Liova Ajavon v Yannick Mertens | 6-7,3-6 | |
| ITF M15 Monastir | 02/03 08:30 | 25 | Alexandre Ruscica v Yannick Mertens | 4-6,1-6 | |
| ITF M15 Parnu | 11/04 10:55 | 25 | Eric Vanshelboim v Yannick Mertens | 4-6,6-3,6-4 | |
| ITF M25 Plaisir | 09/19 15:25 | 28 | Yannick Mertens v Igor Sijsling | 1-6,6-7 | |
| ITF M25 Plaisir | 09/18 11:00 | 27 | [407] Michael Geerts v Yannick Mertens [475] | 6-7,0-6 | |
| ITF M25 Plaisir | 09/17 13:15 | 26 | [475] Yannick Mertens v Pedro Sakamoto [305] | 6-1,6-3 | |
| ITF M25 Plaisir | 09/16 12:00 | 25 | [475] Yannick Mertens v Nicolas Barrientos [262] | 1-6,6-2,6-3 | |
| ITF M15 Faro | 03/05 12:00 | 26 | [466] Yannick Mertens v Alberto Barroso Campos [470] | 7-6,6-7,2-6 | |
| ITF M15 Faro | 03/04 10:00 | 25 | Yannick Mertens v Michal Dembek | 6-2,7-5 | |
| ITF M25 Sunderland | 02/27 10:00 | 26 | [463] Yannick Mertens v Dan Added [379] | 3-6,7-6,6-7 | |
| ITF M25 Sunderland | 02/25 09:55 | 25 | Yannick Mertens v Henry Patten | 7-6,4-6,6-4 | |
| Challenger Koblenz | 02/17 16:05 | 24 | [298] Mirza Basic v Yannick Mertens [465] | 6-3,6-1 | |
| ITF M15 Grenoble | 02/12 11:45 | 25 | Yannick Mertens v Titouan Droguet | 7-6,4-6,4-6 | |
| ITF M15 Veigy-Foncenex | 01/28 13:55 | 25 | Alexis Gautier v Yannick Mertens | 6-2,7-6 | |
| ITF M15 Bressuire | 01/23 12:10 | 26 | Yannick Mertens v Anton Matusevich | 7-6,6-7,5-7 | |
| ITF M15 Bressuire | 01/22 12:05 | 25 | Yannick Mertens v Titouan Droguet | 6-4,6-2 | |
| ITF M15 Villers Les Nancy | 11/14 19:05 | 26 | Harold Mayot v Yannick Mertens | 6-2,6-3 | |
| ITF M15 Villers Les Nancy | 11/13 14:25 | 25 | Hugo Pontico v Yannick Mertens | 2-6,4-6 | |
| ITF M25 Saint Dizier | 11/05 15:00 | 25 | [419] Yannick Mertens v Evan Furness [410] | 3-6,3-6 | |
| ITF M25 Rodez | 10/19 14:25 | 28 | [416] Yannick Mertens v Hugo Gaston [290] | 6-7,4-6 | |
| ITF M25 Rodez | 10/18 10:05 | 27 | [210] Mathias Bourgue v Yannick Mertens [416] | 6-3,4-6,3-6 | |
| ITF M25 Rodez | 10/17 10:40 | 26 | Yannick Mertens v Gregoire Jacq | 6-3,6-3 | |
| ITF M25 Rodez | 10/16 10:00 | 25 | [301] Albano Olivetti v Yannick Mertens [416] | 3-6,3-6 |