Stadium: Court 8 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Frederiksberg | 2021/08/04 08:00 | Marius Ruzgas v Vasil Kirkov | 2-6,2-6 |
| ITF M15 Vejle | 2021/07/27 09:15 | Marius Ruzgas v Alexander Kotzen | 2-6,6-4,3-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/19 10:00 | Daniel De Jonge v Marius Ruzgas | 3-6,7-6,6-1 |
| UTR Pro Tennis Series Copenhagen | 2021/06/18 12:30 | Philip Hjorth v Marius Ruzgas | 6-4,1-6,3-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/17 12:30 | Ludvig Aaes v Marius Ruzgas | 2-6,6-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/15 11:00 | Dominik Palan v Marius Ruzgas | 3-6,4-5 |
| UTR Pro Tennis Series Copenhagen | 2021/06/14 09:30 | Marius Ruzgas v Warren Sinius | 6-2,6-0 |
| ITF M15 Monastir | 2021/04/26 09:00 | Marius Ruzgas v Viktor Jovic | 3-6,3-6 |
| ITF M15 La Paz | 2019/08/13 16:30 | Tomas Farjat v Andres Chavez | 7-6,7-5 |
| ITF USA F10 Qual | 2018/04/08 19:00 | Andres Chavez v Joseph Corse | 4-6,4-6 |
| ITF USA F21 Qual | 2017/06/24 20:30 | Joshua Sheehy v Andres Chavez | 6-1,6-0 |