Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/02/22 14:30 | Colin Sinclair v Daiki Yoshimura | 6-0,6-3 |
| ITF - M15 Monastir | 2021/02/22 09:00 | Colin Sinclair v Sami Ben Abdennibi | 7-6,6-3 |
| ITF - M15 Monastir | 2021/02/21 12:00 | Colin Sinclair v Vladislav Melnic | 4-6,7-5,10-6 |
| ITF - M15 Monastir | 2020/12/17 10:00 | Skander Mansouri v Colin Sinclair | 6-1,6-3 |
| ITF - M15 Monastir | 2020/12/16 13:25 | Colin Sinclair v Martin Breysach | 7-5,6-1 |
| ITF - M15 Monastir | 2020/12/10 08:00 | Colin Sinclair v Luca Potenza | 5-7,6-4,6-7 |
| ITF - M15 Monastir | 2020/12/02 09:30 | Luca Potenza v Colin Sinclair | 7-6,6-3 |
| ITF - M15 Monastir | 2020/11/26 08:00 | Skander Mansouri v Colin Sinclair | 6-2,6-3 |
| German Championship | 2020/12/10 10:30 | Jakob Schnaitter v Christoph Negritu | 7-6,7-5 |
| German Championship | 2020/12/08 15:00 | Marvin Moeller v Christoph Negritu | 6-7,6-3,3-6 |
| ITF M15 - Alkmaar | 2020/08/27 09:00 | Shintaro Mochizuki v Christoph Negritu | 6-4,7-5 |
| ITF M15 - Alkmaar | 2020/08/25 14:40 | Christoph Negritu v Carlos Boluda-Purkiss | 6-3,4-6,6-4 |
| DTB German Pro Series | 2020/06/27 12:00 | Daniel Altmaier v Christoph Negritu | 6-4,7-5 |
| DTB German Pro Series | 2020/06/26 14:40 | Daniel Altmaier v Christoph Negritu | 7-6,6-1 |
| DTB German Pro Series | 2020/06/25 13:50 | Christoph Negritu v Mats Rosenkranz | 6-7,1-6 |
| DTB German Pro Series | 2020/06/24 13:05 | Yannick Hanfmann v Christoph Negritu | 6-4,7-6 |