Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2020/10/29 08:00 | Colin Sinclair v Skander Mansouri | 3-6,4-6 |
| ITF M15 Monastir | 2020/10/27 13:05 | Colin Sinclair v Taiyo Yamanaka | 7-6,3-6,6-3 |
| ITF M25 Hamburg | 2020/10/18 12:30 | Benito Sanchez Martinez v Colin Sinclair | 6-2,6-1 |
| ITF M15 Porec | 2020/03/11 10:40 | Pawel Juszczak v Colin Sinclair | 6-2,6-4 |
| ITF M25 Naples | 2020/02/12 18:45 | Alejandro Gonzalez v Colin Sinclair | 3-6,6-4,6-1 |
| ITF M25 Naples | 2020/02/12 16:30 | Alejandro Gonzalez v Colin Sinclair | 3-6,6-4,5-1 |
| ITF M25 Naples | 2020/02/11 15:00 | Colin Sinclair v Emilio Nava | 7-6,7-6 |
| ITF M25 Naples | 2020/02/10 15:30 | Colin Sinclair v Daniel Vrba | 6-3,6-3 |
| 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 |
| DTB German Pro Series | 2020/06/14 11:50 | Christoph Negritu v Louis Wessels | 6-1,7-6 |
| DTB German Pro Series | 2020/06/13 09:40 | Mika Lipp v Christoph Negritu | 7-5,3-6,3-6 |