Stadium: Court 15 Round: 26 Ground: Hardcourt indoor
| ITF Portugal F9 | 2018/06/18 14:20 | Niklas Schell v Leny Mitjana | 6-3,2-6,3-6 |
| ITF M15 Bressuire | 2020/01/21 12:35 | Leny Mitjana v Antoine Cornut-Chauvinc | 6-7,1-6 |
| ITF M25 Troyes | 2019/07/25 16:00 | Leny Mitjana v Maxime Hamou | 6-2,3-6,0-6 |
| ITF M25 Troyes | 2019/07/24 15:00 | Ivan Davydov v Leny Mitjana | 2-6,2-6 |
| Challenger Pau | 2019/02/25 13:20 | Norbert Gombos v Leny Mitjana | 6-4,6-1 |
| ITF M15 Grenoble | 2019/02/10 14:30 | Leny Mitjana v Yannick Mertens | 6-3,7-5 |
| ITF M15 Grenoble | 2019/02/09 15:45 | Leny Mitjana v Geoffrey Blancaneaux | 6-2,7-6 |
| ITF M15 Grenoble | 2019/02/08 15:55 | Leny Mitjana v Clement Tabur | 3-6,6-3,7-5 |
| ITF M15 Grenoble | 2019/02/07 15:40 | Leny Mitjana v Baptiste Anselmo | 6-4,6-2 |
| ITF M15 Allershausen | 2021/09/02 08:55 | Mats Rosenkranz v Niklas Schell | 6-3,7-6 |
| ITF M15 Allershausen | 2021/09/01 12:05 | Milan Welte v Niklas Schell | 6-3,2-6,3-6 |
| ITF M25 Ueberlingen | 2021/08/19 10:00 | Niklas Schell v Eduard Esteve Lobato | 6-7,1-6 |
| ITF M25 Ueberlingen | 2021/08/18 09:30 | Niklas Schell v Florian Broska | 3-6,6-3,6-3 |
| ITF M25 Frankfurt am Main | 2021/08/10 10:30 | Taiyo Yamanaka v Niklas Schell | 6-1,6-2 |
| ITF M25 Frankfurt am Main | 2021/08/09 11:55 | Max Wiskandt v Niklas Schell | 6-3,3-6,5-10 |
| ITF M25 Marburg | 2021/07/07 13:00 | Louis Wessels v Niklas Schell | 6-3,6-4 |
| ITF M25 Klosters | 2021/06/20 08:55 | Ilias Zimmermann v Niklas Schell | 6-4,4-6,12-10 |