Stadium: Tammsaare 4 Round: 54 Ground: Hardcourt indoor
| 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 Antalya | 2021/05/02 06:00 | Arvid Nordquist v Antonio Massara | 5-7,2-6 |
| Challenger Tampere | 2021/07/18 11:35 | Peetu Pohjola v Nicolas Kicker | 0-6,2-6 |
| ITF M15 Helsinki | 2021/05/31 10:00 | Yannik Steinegger v Peetu Pohjola | 6-2,6-3 |
| ITF M15 Kouvola | 2021/05/25 10:00 | Lorenzo Rottoli v Peetu Pohjola | 7-6,6-2 |