Round: 25 Ground: Clay
| ITF - M25 - Uriage | 2021/07/14 16:20 | Mathys Erhard v Edouard Villoslada | 6-2,6-4 |
| ITF - M25 - Grasse | 2021/06/17 11:30 | Franco Agamenone v Mathys Erhard | 6-4,7-6 |
| ITF - M25 - Grasse | 2021/06/16 16:10 | Mathys Erhard v Christian Lindell | 2-6,6-2,7-5 |
| ITF - M25 - Grasse | 2021/06/14 14:30 | Thomas Deschamps v Mathys Erhard | 3-6,4-6 |
| ITF - M25 - Grasse | 2021/06/14 07:30 | Robin Bertrand v Mathys Erhard | 2-6,6-1,6-10 |
| ITF - M25 - Grasse | 2021/06/13 09:35 | Mathis Bondaz v Mathys Erhard | 0-6,1-6 |
| Challenger - Lyon | 2021/06/06 11:05 | Alexey Vatutin v Mathys Erhard | 6-4,6-4 |
| ITF - M15 - Antalya | 2021/05/05 10:10 | Mathys Erhard v Cheong-Eui Kim | 4-6,6-2,4-6 |
| ITF - M25 - Montauban | 2021/06/23 10:05 | Antoine Escoffier v Lilian Marmousez | 7-6,7-5 |
| ITF - M25 - Grasse | 2021/06/15 08:00 | Lilian Marmousez v Bogdan Bobrov | 7-5,6-2 |
| ITF - M15 - Helsinki | 2021/06/06 06:00 | Lilian Marmousez v Kyrian Jacquet | 1-6,2-6 |
| ITF - M15 - Helsinki | 2021/06/05 07:00 | Lucas Catarina v Lilian Marmousez | 3-6,3-6 |
| ITF - M15 - Helsinki | 2021/06/04 07:00 | Lilian Marmousez v Bruno Kuzuhara | 6-4,7-6 |
| ITF - M15 - Helsinki | 2021/06/03 07:00 | Otto Virtanen v Lilian Marmousez | 5-7,6-1,4-6 |
| ITF - M15 - Helsinki | 2021/06/02 06:30 | Karl Kiur Saar v Lilian Marmousez | 2-6,4-6 |
| ITF - M15 - Las Palmas | 2021/04/27 08:00 | Lilian Marmousez v Francisco Andreu Garcia | 6-4,5-7,7-10 |