Stadium: Court 8 Round: 26 Ground: Clay
| Challenger Tampere | 2021/07/18 08:00 | Bogdan Bobrov v Markus Eriksson | 7-6,6-4 |
| ATP Bastad | 2021/07/11 09:00 | Markus Eriksson v Thomas Fabbiano | 6-7,4-6 |
| ITF M25 Bourg-en-Bresse | 2021/07/01 08:30 | Markus Eriksson v Clement Tabur | 6-7,6-7 |
| ITF M25 Bourg-en-Bresse | 2021/06/30 07:00 | Markus Eriksson v Alexandre Aubriot | 6-2,2-6,6-3 |
| ITF M25 Montauban | 2021/06/22 11:00 | Nathan Seateun v Markus Eriksson | 6-4,7-5 |
| 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 |
| UTR Pro Tennis Series Beograd | 2021/07/11 07:00 | Yanais Laurent v Nikola Slavic | 3-6,4-5 |
| UTR Pro Tennis Series Beograd | 2021/07/10 08:30 | Giacomo Revelli v Nikola Slavic | 2-6,4-5 |
| UTR Pro Tennis Series Beograd | 2021/07/08 09:00 | Nikola Slavic v Olexiy Kolisnyk | 1-6,4-6 |
| UTR Pro Tennis Series Beograd | 2021/07/07 10:30 | Nikola Slavic v Constant De La Bassetiere | 6-4,5-4 |
| UTR Pro Tennis Series Beograd | 2021/07/06 14:00 | Nikola Slavic v Michalis Sakellaridis | 6-3,6-6 |
| UTR Pro Tennis Series Beograd | 2021/07/05 07:30 | Nikola Slavic v Dusan Obradovic | 6-7,6-7 |
| ITF M25 Belgrade | 2021/06/30 08:45 | Nikola Slavic v Akira Santillan | 1-6,1-6 |
| ITF M25 Belgrade | 2021/06/29 09:00 | George Botezan v Nikola Slavic | 4-6,2-6 |