Stadium: Hard Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2021/11/08 08:00 | Marius Ruzgas v George Gregoriou | 6-3,6-3 |
| ITF M15 Heraklion | 2021/11/07 09:00 | Marius Ruzgas v Michel-Alexandre Fortin | 6-3,3-6,10-3 |
| ITF M15 Heraklion | 2021/11/02 08:30 | Marius Ruzgas v Ryan James Storrie | 4-6,1-6 |
| UTR Pro Tennis Series Copenhagen | 2021/10/24 07:00 | Vilhelm Fridell v Marius Ruzgas | 2-6,6-3,6-7 |
| UTR Pro Tennis Series Copenhagen | 2021/10/23 09:30 | Arslan Temirhanov v Marius Ruzgas | 3-6,5-7 |
| UTR Pro Tennis Series Copenhagen | 2021/10/22 08:30 | Adam Heinonen v Marius Ruzgas | 3-6,6-3,3-5 |
| UTR Pro Tennis Series Copenhagen | 2021/10/21 08:30 | Alexander Stage v Marius Ruzgas | 2-6,2-6 |
| UTR Pro Tennis Series Copenhagen | 2021/10/19 08:30 | Drew Van Orderlain v Marius Ruzgas | 3-6,4-6 |
| ITF M15 Heraklion | 2021/11/08 09:00 | Jannik Maute v Tim Heger | 4-6,6-3,15-13 |
| ITF M15 Heraklion | 2021/11/07 09:00 | Jannik Maute v Thomas George Brun | 6-0,6-0 |