Estádio: Court 10 Round: 62 Ground: Clay
| ITF - M15 Parnu | 2021/08/05 10:30 | Ergi Kirkin v Alexander Kotzen | 7-6,6-4 |
| ITF - M15 Parnu | 2021/08/04 09:05 | Julius Tverijonas v Alexander Kotzen | 6-3,5-7,2-6 |
| ITF - M15 Vejle | 2021/07/30 08:00 | Ergi Kirkin v Alexander Kotzen | 6-2,6-3 |
| ITF - M15 Vejle | 2021/07/27 09:15 | Marius Ruzgas v Alexander Kotzen | 2-6,6-4,3-6 |
| ITF - M15 Esch/Alzette | 2021/07/22 13:10 | Tommaso Compagnucci v Alexander Kotzen | 6-2,6-0 |
| ITF - M15 Esch/Alzette | 2021/07/21 10:55 | Alexander Kotzen v Louis Wessels | 2-6,6-3,6-4 |
| ITF - M15 Esch/Alzette | 2021/07/20 11:00 | Benjamin Dhoe v Alexander Kotzen | 3-6,4-6 |
| ITF - M15 Esch/Alzette | 2021/07/19 09:00 | Alexander Kotzen v Tibo Colson | 4-6,6-1,10-7 |
| ITF - M15 Gdynia | 2021/08/08 08:30 | Jonas Maier v Piotr Pawlak | 4-6,1-6 |
| ITF - M25 Grodzisk Mazowiecki | 2021/08/02 08:00 | Yujiro Onuma v Piotr Pawlak | 3-6,6-3,10-6 |
| Polónia - Tour Nacional | 2021/07/10 09:30 | Piotr Pawlak v Dominik Nazaruk | 3-6,4-6 |
| ITF - M15 Poprad | 2021/07/04 08:00 | Illya Beloborodko v Piotr Pawlak | 6-0,6-7,10-6 |
| ITF - M25 Wrocław | 2021/06/27 15:30 | Ignacio Monzon v Piotr Pawlak | 1-6,6-4,10-5 |
| ITF - M15 Novomoskovsk | 2021/05/31 13:45 | Alexander Zgirovsky v Piotr Pawlak | 6-3,6-1 |
| ITF - M15 Novomoskovsk | 2021/05/30 06:15 | Piotr Pawlak v Martin Dimitrov | 4-6,6-4,10-6 |
| ITF - M15 Shymkent | 2021/04/13 07:35 | Aleksandr Braynin v Piotr Pawlak | 7-5,6-3 |