Estadio: Court 3 Round: 14 Ground: Clay
| Challenger de San Marino | 2021/08/08 08:00 | Manuel Mazza v Matteo Martineau | 6-1,3-6,6-3 |
| Challenger de Pozoblanco | 2021/07/20 15:00 | Matteo Martineau v Teymuraz Gabashvili | 4-6,6-1,4-6 |
| Challenger de Pozoblanco | 2021/07/19 15:00 | Matteo Martineau v Federico Zeballos | 6-2,6-3 |
| Challenger de Pozoblanco | 2021/07/18 15:30 | Matteo Martineau v Antonio Prat | 6-0,6-7,6-2 |
| Challenger de Iasi | 2021/07/11 07:00 | Matteo Martineau v Vlad Andrei Dancu | 3-6,6-7 |
| ITF M25 Bourg-en-Bresse | 2021/07/03 15:30 | Franco Agamenone v Matteo Martineau | 6-4,2-6,6-4 |
| ITF M25 Bourg-en-Bresse | 2021/07/02 10:00 | Jakub Paul v Matteo Martineau | 4-6,6-7 |
| ITF M25 Bourg-en-Bresse | 2021/07/01 12:30 | Ugo Blanchet v Matteo Martineau | 6-7,3-6 |
| Challenger de Praga | 2021/08/10 11:45 | Adrian Andreev v Nino Serdarusic | 3-6,3-6 |
| Challenger de Praga | 2021/08/09 09:55 | Adrian Andreev v Facundo Diaz Acosta | 2-6,6-4,6-3 |
| Challenger de Praga | 2021/08/08 12:00 | Adrian Andreev v Aldin Setkic | 7-5,6-1 |
| Challenger de Segovia | 2021/07/26 16:30 | Adrian Andreev v Benjamin Bonzi | 7-6,4-6,6-7 |
| Challenger de Pozoblanco | 2021/07/21 15:00 | Adrian Andreev v Gregoire Barrere | 3-6,0-6 |
| Challenger de Pozoblanco | 2021/07/19 19:45 | Adrian Andreev v Blas Ruiz Romero | 6-0,6-0 |
| Challenger de Iasi | 2021/07/14 08:00 | Lucas Miedler v Adrian Andreev | 7-6,6-1 |
| Challenger de Iasi | 2021/07/12 09:20 | Adrian Andreev v Alexandre Muller | 6-4,1-6,6-3 |