Stadium: Court 10 Round: 62 Ground: Clay
| ITF M15 Heraklion | 2021/05/27 06:30 | Luke Johnson v Harry Wendelken | 6-2,6-7,6-3 |
| 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 Qual | 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 M15 Heraklion | 2021/05/28 06:30 | Ze Zhang v Luke Johnson | 6-1,6-1 |
| ITF M15 Gdynia | 2021/08/09 08:00 | Dominik Nazaruk v Harry Wendelken | 1-6,1-6 |
| ITF M15 Gdynia | 2021/08/08 08:00 | Yann Wojcik v Harry Wendelken | 6-7,1-6 |
| ITF M25 Idanha-A-Nova | 2021/07/11 13:00 | Francisco Rocha v Harry Wendelken | 7-6,6-4 |
| ITF M15 Almada | 2021/07/09 08:30 | Harry Wendelken v Daniel Cox | 2-6,1-6 |
| ITF M15 Almada | 2021/07/08 08:30 | Martim L Prata v Harry Wendelken | 4-6,6-7 |
| ITF M15 Almada | 2021/07/07 08:30 | Martin Breysach v Harry Wendelken | 3-6,3-6 |
| ITF M15 Almada | 2021/07/05 10:00 | Harry Wendelken v Luigi Castelletti | 6-0,6-0 |
| ITF M15 Almada | 2021/07/04 10:30 | Harry Wendelken v Andre Rodeia | 7-6,6-1 |