Stadium: Court 20 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Troisdorf | 2021/05/09 08:00 | Johann Lars v Sidane Pontjodikromo | 1-6,1-6 |
| ITF M25 Meerbusch | 2021/04/12 13:00 | Johann Lars v Mats Hermans | 6-3,2-6,3-10 |
| ITF M25 Meerbusch | 2021/04/12 09:00 | Johann Lars v Christopher Patzanovsky | 6-4,4-6,10-8 |
| ITF M25 Trimbach | 2021/03/09 12:00 | Niklas Schell v Johann Lars | 6-3,6-4 |
| ITF M25 Trimbach | 2021/03/08 11:05 | Kaj Quirijns v Johann Lars | 3-6,6-7 |
| German Championship | 2020/12/09 15:30 | Johann Lars v Kai Wehnelt | 3-6,1-6 |
| German Championship | 2020/12/08 09:36 | Christian Hansen v Johann Lars | 3-6,3-6 |
| ITF M15 Forbach | 2020/09/28 07:00 | Johann Lars v Alexis Canter | 5-7,2-6 |
| ITF M15 Sharm El Sheikh | 2021/04/08 08:55 | Adam Jones v Alessandro Bega | 0-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/04/07 10:30 | Da-niel Kotze v Adam Jones | 2-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/04/06 08:55 | Neil Oberleitner v Adam Jones | 2-6,6-1,8-10 |
| ITF M15 Sharm El Sheikh | 2021/04/05 11:30 | Adam Jones v Takuya Kumasaka | 4-6,6-1,10-7 |
| ITF M15 Sharm El Sheikh | 2021/04/04 09:30 | Obrad Markovski v Adam Jones | 0-6,4-6 |
| ITF M15 Sharm El Sheikh | 2021/03/28 14:30 | Adam Jones v Lewie Lane | 6-3,1-6,15-17 |
| ITF M15 Sharm El Sheikh | 2021/03/22 11:30 | Mattia Bellucci v Adam Jones | 6-4,6-4 |
| ITF M15 Sharm El Sheikh | 2021/03/21 16:00 | Adam Jones v Omer Yeshaya | 4-6,6-1,13-11 |