Stadium: Court 1 Round: 25 Ground: Clay
| ITF M15 - Gdynia | 2021/08/10 08:00 | Luke Johnson v Harry Wendelken | 6-3,6-7,10-5 |
| ITF M15 - Gdynia | 2021/08/09 08:00 | Luke Johnson v Marcel Kamrowski | 6-3,6-2 |
| ITF M15 - Parnu | 2021/08/06 08:00 | Ergi Kirkin v Luke Johnson | 6-2,6-1 |
| ITF M15 - Parnu | 2021/08/05 06:55 | Paul Valsecchi v Luke Johnson | 6-3,4-6,0-6 |
| ITF M15 - Parnu | 2021/08/04 12:05 | Lorenzo Rottoli v Luke Johnson | 6-2,6-7,4-6 |
| Challenger Nottingham - Kval | 2021/06/13 10:00 | Luke Johnson v Ramkumar Ramanathan | 6-3,3-6,2-6 |
| ITF M15 - Heraklion | 2021/06/03 06:30 | Luke Johnson v Ben Patael | 4-6,6-3,3-6 |
| ITF M15 - Heraklion | 2021/06/02 06:30 | Luke Johnson v Mattia Bellucci | 6-2,7-5 |
| ITF M25 - Grodzisk Mazowiecki | 2021/08/04 17:10 | David Poljak v Szymon Kielan | 7-5,6-3 |
| Polen - National Tour | 2021/07/11 10:00 | Kamil Majchrzak v Szymon Kielan | 6-1,7-6 |
| ITF M25 - Wroclaw | 2021/06/30 13:15 | Gonzalo Lama v Szymon Kielan | 6-1,6-2 |
| ITF M25 - Wroclaw | 2021/06/29 08:00 | Szymon Kielan v Mateusz Terczynski | 6-3,6-2 |
| ITF M25 - Wroclaw | 2021/06/28 11:00 | Lewie Lane v Szymon Kielan | 3-6,0-6 |
| ITF M25 - Wroclaw | 2021/06/27 12:30 | Szymon Kielan v Stepan Pecak | 4-6,6-4,10-8 |
| ITF M25 - Poznan | 2020/08/23 11:00 | Leyton Rivera v Szymon Kielan | 4-6,6-3,10-3 |
| Polen - National Tour | 2020/08/20 07:00 | Filip Kolasinski v Szymon Kielan | 6-2,7-6 |