Stadium: Court 12 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Falun | 2021/09/27 07:50 | Harry Wendelken v Iiro Vasa | 6-7,6-1,16-14 |
| ITF M25 Falun | 2021/09/26 08:00 | Leevi Saatela v Iiro Vasa | 4-6,2-6 |
| ITF M15 Bratislava | 2021/08/23 09:00 | Jakub Kroslak v Iiro Vasa | 6-1,6-3 |
| ITF M15 Bratislava | 2021/08/16 08:00 | Iiro Vasa v Eero Vasa | 1-6,3-6 |
| ITF M15 Parnu | 2021/08/04 10:10 | Iiro Vasa v Otto Virtanen | 5-7,2-6 |
| ITF M15 Parnu | 2021/08/03 08:30 | Martins Rocens v Iiro Vasa | 3-6,7-6,7-10 |
| ITF M15 Vejle | 2021/07/26 08:00 | Adrian Oetzbach v Iiro Vasa | 6-3,7-5 |
| Challenger Tampere | 2021/07/18 12:55 | Iiro Vasa v Arthur Cazaux | 2-6,6-7 |
| ITF M25 Pretoria | 2021/09/26 08:50 | Preston Brown v Luc Koenig | 7-5,2-6,5-10 |
| ITF M25 Johannesburg | 2021/09/21 07:00 | Menelaos Efstathiou v Preston Brown | 6-2,6-2 |
| ITF M25 Johannesburg | 2021/09/20 07:00 | Guelord Kayombo v Preston Brown | 1-6,2-6 |
| ITF M25 Johannesburg Qual | 2021/09/19 12:00 | Adi Dagan v Preston Brown | 0-6,5-7 |
| ITF M25 Johannesburg | 2021/09/13 09:40 | Preston Brown v Omer Yeshaya | 6-1,6-7,3-10 |
| ITF M25 Johannesburg | 2021/09/12 10:35 | Preston Brown v Logan Stoltz | 6-1,6-1 |
| ITF M25 Decatur | 2021/08/04 16:55 | Preston Brown v Eliot Spizzirri | 0-6,3-6 |
| ITF M25 Decatur | 2021/08/03 15:00 | Preston Brown v Connor Farren | 6-4,6-3 |