Stadium: Court Central Round: 25 Ground: Clay
| 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 M15 Antalya | 2021/04/25 07:00 | Mathys Erhard v Gabriele Bosio | 6-4,4-6,6-10 |
| ITF M15 Antalya | 2021/04/21 07:00 | Francesco Forti v Mathys Erhard | 6-4,6-2 |
| ITF M15 Antalya | 2021/04/20 12:00 | Luis Faria v Mathys Erhard | 4-6,3-6 |
| ITF M15 Antalya | 2021/06/10 10:25 | Christian Lindell v Martin Krumich | 3-6,3-6 |
| ITF M15 Antalya | 2021/06/09 10:50 | Christian Lindell v Patrik Rikl | 6-3,6-4 |
| ITF M25 Most | 2021/05/26 09:50 | Andrew Paulson v Christian Lindell | 6-2,6-3 |
| ITF M25 Jablonec Nad Nisou | 2021/05/19 10:40 | Martin Krumich v Christian Lindell | 6-3,6-1 |
| Challenger - Santiago | 2021/03/15 17:10 | Tomas Barrios Vera v Christian Lindell | 4-6,6-1,7-6 |
| ATP Santiago | 2021/03/06 13:00 | Juan Pablo Varillas v Christian Lindell | 4-6,7-5,7-6 |
| ATP Buenos Aires | 2021/02/27 15:30 | Thiago Seyboth Wild v Christian Lindell | 6-1,7-6 |
| ATP Córdoba | 2021/02/21 16:35 | Tomas Martin Etcheverry v Christian Lindell | 7-5,6-2 |