Stadium: Court 5 Round: 44 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/02/22 09:00 | Kotzen, Alexander v Tobias Franco | 6-0,6-3 |
| ITF - M15 Monastir | 2021/02/21 13:00 | Maiga, Riccardo v Kotzen, Alexander | 7-5,4-6,4-10 |
| ITF - M15 Monastir | 2021/02/17 08:00 | Oliver Crawford v Kotzen, Alexander | 2-6,6-1,6-3 |
| ITF - M15 Monastir | 2021/02/15 12:30 | Giacalone, Omar v Kotzen, Alexander | 6-3,4-6,7-10 |
| ITF - M15 Monastir | 2021/02/11 09:35 | Kotzen, Alexander v Petit, Gabriel | 6-2,4-6,6-7 |
| ITF - M15 Monastir | 2021/02/10 13:15 | Kotzen, Alexander v Aziz Ouakaa | 6-1,6-3 |
| ITF - M15 Monastir | 2021/02/08 09:00 | Kenneth Raisma v Kotzen, Alexander | 2-6,7-5,8-10 |
| ITF - M15 Monastir | 2021/01/07 08:00 | Kotzen, Alexander v Joncour, Ronan | 7-5,5-7,2-6 |
| ITF - M15 Monastir | 2021/02/22 09:00 | Adit Sinha v Martinez, Mirko | 4-6,0-6 |
| ITF - M15 Monastir | 2021/02/21 12:00 | Leyton Rivera v Martinez, Mirko | 1-6,2-6 |
| ITF - M15 Grenoble | 2021/02/11 09:25 | Martinez, Mirko v Lucas Poullain | 3-6,4-6 |
| ITF - M15 Grenoble | 2021/02/10 13:35 | Antoine Escoffier v Martinez, Mirko | 1-6,6-3,3-6 |
| ITF - M15 Grenoble | 2021/02/08 11:20 | Louis Tessa v Martinez, Mirko | 2-6,7-5,8-10 |
| ITF - M15 Grenoble | 2021/02/07 13:15 | Mayeul Darras v Martinez, Mirko | 3-6,6-4,3-10 |
| ITF M25 Villena | 2021/02/01 08:30 | Lucas Gerch v Martinez, Mirko | 7-6,6-4 |
| ITF M25 Villena | 2021/01/31 08:30 | Martinez, Mirko v Egor Matvievici | 6-3,6-0 |