Stadium: Centre Court 14 Round: 26 Ground: Clay
| ITF M15 Majadahonda | 2021/05/04 09:40 | Matteo Martineau v Pedro Boscardin Dias | 6-1,6-0 |
| ITF M25 Angers | 2021/04/21 09:30 | Matteo Martineau v Lucas Catarina | 6-7,2-6 |
| ITF M25 Reus | 2021/04/18 09:00 | Emilio Nava v Matteo Martineau | 4-6,6-2,6-7 |
| ITF M25 Reus | 2021/04/17 09:35 | Pol Martin Tiffon v Matteo Martineau | 6-2,1-6,4-6 |
| ITF M25 Reus | 2021/04/16 09:00 | Matteo Martineau v Johan Sebastien Tatlot | 5-7,6-1,6-1 |
| ITF M25 Reus | 2021/04/15 12:00 | Matteo Martineau v Georgii Kravchenko | 6-2,6-4 |
| ITF M25 Reus | 2021/04/14 08:00 | Matteo Martineau v Yan Bondarevskiy | 6-0,7-6 |
| Challenger Split | 2021/04/05 08:30 | Blaz Kavcic v Matteo Martineau | 3-6,6-3,6-1 |
| ITF M15 Majadahonda | 2021/05/05 09:00 | Ignacio B Alia v Sebastian Fanselow | 2-6,0-6 |
| ITF M25 Angers | 2021/04/22 13:30 | Alvaro Lopez San Martin v Sebastian Fanselow | 2-6,6-1,6-4 |
| ITF M25 Angers | 2021/04/21 15:05 | Sebastian Fanselow v Nikolas Sanchez Izquierdo | 6-2,7-5 |
| ITF M25 La Nucia | 2021/03/19 14:05 | Sebastian Fanselow v Raul Brancaccio | 6-7,0-6 |
| ITF M25 Vale Do Lobo | 2021/03/14 11:30 | Kaichi Uchida v Sebastian Fanselow | 5-7,7-6,7-6 |
| ITF M25 Vale Do Lobo | 2021/03/13 13:20 | Sebastian Fanselow v Tak Khunn Wang | 6-1,6-3 |
| ITF M25 Vale Do Lobo | 2021/03/12 10:30 | Sebastian Fanselow v Pedro Araujo | 6-2,7-6 |
| ITF M25 Vale Do Lobo | 2021/03/11 16:05 | Bradley Paliska v Sebastian Fanselow | 2-6,2-6 |