Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/03/10 10:30 | Mertens, Yannick v Schmitz, Constantin | 6-0,6-2 |
| ITF - M15 Monastir | 2021/02/13 08:30 | Mertens, Yannick v Gauthier Onclin | 6-3,1-6,2-6 |
| ITF - M15 Monastir | 2021/02/12 10:05 | Mertens, Yannick v Juan Bautista Torres | 6-2,6-3 |
| ITF - M15 Monastir | 2021/02/11 08:25 | Mertens, Yannick v Mugevicius, Lukas | 6-1,6-1 |
| ITF - M15 Monastir | 2021/02/10 08:30 | Mertens, Yannick v Stuart Parker | 5-7,6-4,6-3 |
| ITF - M15 Monastir | 2021/02/07 08:30 | Mertens, Yannick v Stuart Parker | 3-6,6-4,6-7 |
| ITF - M15 Monastir | 2021/02/06 08:30 | Mertens, Yannick v Kocevar-Desman, Tom | 6-3,6-2 |
| ITF - M15 Monastir | 2021/02/05 09:30 | Skander Mansouri v Mertens, Yannick | 6-3,1-6,4-6 |
| ITF - M15 Monastir | 2021/03/09 08:30 | Lipovsek Puches, Tomas v Naoki Nakagawa | 2-6,2-6 |
| ITF - M15 Monastir | 2021/03/03 08:30 | Renta Tokuda v Naoki Nakagawa | 6-1,6-3 |
| ITF - M15 Monastir | 2021/03/01 12:30 | Naoki Nakagawa v Noah Lopez | 6-3,6-3 |
| ITF - M15 Monastir | 2021/03/01 08:00 | Naoki Nakagawa v Sami Ben Abdennibi | 6-2,6-1 |
| ITF - M15 Monastir | 2021/02/28 08:00 | Naoki Nakagawa v Louis Allen | 6-2,6-3 |
| ITF - M15 Monastir | 2021/02/25 11:30 | Stuart Parker v Naoki Nakagawa | 6-4,6-3 |
| ITF - M15 Monastir | 2021/02/24 08:00 | Yassine Dlimi v Naoki Nakagawa | 2-6,0-6 |
| ITF - M15 Monastir | 2021/02/22 12:30 | Naoki Nakagawa v Fons Van Sambeek | 6-2,6-1 |