Stadium: Central Round: 25 Ground: Clay
| ITF M25 - La Nucia | 2021/03/14 11:00 | Nathan Seateun v Egor Matvievici | 6-2,6-0 |
| ITF M15 - La Nucia | 2021/03/11 13:00 | Nathan Seateun v Nikolas Sanchez Izquierdo | 2-6,1-6 |
| ITF M15 - La Nucia | 2021/03/10 12:42 | Miguel Damas v Nathan Seateun | 3-6,1-6 |
| ITF M15 - La Nucia | 2021/03/10 10:30 | Miguel Damas v Nathan Seateun | 3-6,1-6 |
| ITF M15 - La Nucia | 2021/03/09 15:45 | Nathan Seateun v Miguel Damas | 7-5,6-1 |
| ITF M15 - La Nucia | 2021/03/09 11:00 | Nathan Seateun v Leopold Zima | 6-3,7-6 |
| ITF M15 - Grenoble | 2021/02/07 15:30 | Nathan Seateun v Maxence Broville | 4-6,2-6 |
| ITF M15 - Monastir | 2021/01/06 10:30 | Alexander Kotzen v Nathan Seateun | 6-2,6-7,6-3 |
| ITF M25 - Grasse | 2021/06/17 08:00 | Markus Eriksson v Alvaro Lopez San Martin | 2-6,1-6 |
| ITF M25 - Grasse | 2021/06/15 13:05 | Markus Eriksson v Dan Added | 6-4,6-2 |
| ITF M25 - Most | 2021/05/27 07:55 | Antonin Bolardt v Markus Eriksson | 6-4,6-4 |
| ITF M25 - Most | 2021/05/26 12:15 | Hasan Ibrahim v Markus Eriksson | 3-6,1-6 |
| ITF M25 - Jablonec Nad Nisou | 2021/05/18 12:10 | Uladzimir Ignatik v Markus Eriksson | 6-0,6-1 |
| ITF M25 - Prag | 2021/05/12 09:30 | Markus Eriksson v Patrik Rikl | 4-6,5-7 |
| ITF M25 - Angers | 2021/04/21 11:55 | Markus Eriksson v Pol Martin Tiffon | 5-7,0-6 |
| ITF M25 - Meerbusch | 2021/04/15 10:00 | Markus Eriksson v Milan Welte | 3-6,1-6 |