Stadium: Court 2 Round: 54 Ground: Clay
| ITF M25 Klosters | 2021/06/20 08:40 | Johann Lars v Yannik Steinegger | 2-6,4-6 |
| ITF M15 Heraklion | 2021/05/23 06:30 | Federico Arnaboldi v Johann Lars | 6-1,6-2 |
| ITF M15 Heraklion | 2021/05/17 07:00 | Johann Lars v Sergis Kyratzis | 6-7,4-6 |
| ITF M15 Heraklion | 2021/05/16 07:00 | Johann Lars v Adam Jones | 7-6,2-6,10-4 |
| 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 Wetzlar | 2021/08/02 12:45 | Jannik Rother v Gilad Tamar | 6-1,6-0 |
| ITF M15 Troisdorf | 2021/05/09 10:00 | Aliaksandr Bulitski v Jannik Rother | 6-4,1-6,10-7 |
| ITF M25 Meerbusch | 2021/04/11 13:30 | Jannik Rother v Milan Welte | 2-6,2-6 |
| ITF M15 Oldenzaal | 2019/08/14 17:20 | Jannik Rother v Guy Den Heijer | 7-5,3-6,4-6 |
| ITF M15 Oldenzaal | 2019/08/13 07:30 | Dax Donders v Jannik Rother | 5-7,0-6 |
| ITF M15 Oldenzaal | 2019/08/12 07:30 | Lars Bijsterbosch v Jannik Rother | 0-6,2-6 |
| ITF M25 Kassel | 2019/07/15 11:00 | Jannik Rother v Timo Stodder | 4-6,5-7 |
| ITF M15 Marburg | 2019/07/08 07:00 | Jannik Rother v Yannik Steinegger | 4-6,2-6 |