Stadium: Tammsaare 2 Round: 54 Ground: Hardcourt indoor
| ITF M15 Parnu | 2021/08/02 07:00 | Arvid Nordquist v Peetu Pohjola | 6-4,6-0 |
| ITF M15 Almada | 2021/07/04 13:00 | Arvid Nordquist v Eduardo Morais | 3-6,4-6 |
| ITF M15 Helsinki | 2021/06/01 08:45 | Arvid Nordquist v Mikhail Minakov | 3-6,3-6 |
| ITF M15 Helsinki | 2021/05/31 10:00 | Arvid Nordquist v Leevi Saatela | 6-3,6-2 |
| ITF M15 Kouvola | 2021/05/27 07:00 | Alessandro Bega v Arvid Nordquist | 5-7,7-5,6-3 |
| ITF M15 Antalya | 2021/05/17 07:00 | Arvid Nordquist v Jose Pereira | 1-6,4-6 |
| ITF M15 Antalya | 2021/05/16 07:00 | Eduardo Ribeiro v Arvid Nordquist | 1-6,0-6 |
| ITF M15 Antalya | 2021/05/09 07:00 | Arvid Nordquist v Vladimir Korolev | 4-6,4-6 |
| ITF M15 Parnu | 2021/08/02 07:00 | Robin Erik Parts v Pavel Shchaya-Zubrov | 7-6,3-6,7-10 |
| ITF M15 St Petersburg | 2021/04/12 10:25 | Pavel Shchaya-Zubrov v Constantin Bittoun Kouzmine | 0-6,3-6 |
| ITF M15 St Petersburg Qual | 2021/04/11 15:45 | Alexandr Binda v Pavel Shchaya-Zubrov | 4-6,6-4,9-11 |
| ITF M15 St Petersburg | 2021/04/04 07:00 | Pavel Shchaya-Zubrov v Illya Beloborodko | 2-6,0-6 |
| ITF M15 St Petersburg Qual | 2021/02/07 13:35 | Andrew Paulson v Pavel Shchaya-Zubrov | 6-2,6-2 |
| ITF M15 Antalya | 2021/01/18 09:00 | Pavel Shchaya-Zubrov v Billy Harris | 0-6,2-6 |
| ITF M15 Antalya | 2021/01/11 07:00 | Yan Sabanin v Pavel Shchaya-Zubrov | 6-2,6-3 |
| ITF M15 Antalya | 2021/01/10 06:00 | Pavel Shchaya-Zubrov v Bulat Galiev | 6-3,6-2 |