Stadium: Court 3 Round: 25 Ground: Clay
| ITF M15 Lodz | 2021/08/17 08:00 | Karlis Ozolins v Markus Eriksson | 6-7,6-1,2-6 |
| ITF M25 Decatur | 2021/08/06 15:00 | Karlis Ozolins v Paul Jubb | 1-6,6-1,6-7 |
| ITF M25 Decatur | 2021/08/05 14:50 | Karlis Ozolins v Shintaro Imai | 7-6,3-6,7-6 |
| ITF M25 Decatur | 2021/08/04 18:25 | Kaichi Uchida v Karlis Ozolins | 4-6,4-6 |
| ITF M25 Champaign | 2021/07/28 16:45 | Christian Langmo v Karlis Ozolins | 7-6,6-1 |
| ITF M15 Monastir | 2021/05/06 10:05 | Mohamed Aziz Dougaz v Karlis Ozolins | 6-4,6-3 |
| ITF M15 Monastir | 2021/05/04 10:30 | Jabari Stafford v Karlis Ozolins | 1-6,1-6 |
| ITF M15 Monastir | 2021/04/27 08:30 | Karlis Ozolins v Oscar Jose Gutierrez | 4-6,2-6 |
| ITF M15 Xativa | 2021/08/04 09:35 | Edoardo Lavagno v Francesco Passaro | 4-6,5-7 |
| ITF M25 Belgrade | 2021/07/02 07:00 | Alexandar Lazarov v Edoardo Lavagno | 6-2,6-0 |
| ITF M25 Belgrade | 2021/07/01 07:00 | Edoardo Lavagno v Alexander Cozbinov | 6-4,6-3 |
| ITF M25 Belgrade | 2021/06/30 08:40 | Edoardo Lavagno v George Botezan | 6-2,4-6,6-1 |
| ITF M25 Belgrade | 2021/06/29 09:20 | Edoardo Lavagno v Gorazd Srbljak | 6-0,6-3 |
| ITF M25 Belgrade | 2021/06/28 07:00 | Edoardo Lavagno v Dusan Rajic | 6-1,6-2 |
| ITF M25 Belgrade | 2021/06/27 07:00 | Edoardo Lavagno v Alessandro Bellifemine | 6-1,6-1 |
| ITF M15 Bergamo | 2021/06/21 21:45 | Edoardo Lavagno v Gabriele Piraino | 3-6,7-6,9-11 |