Stadium: Tad Taube Court Round: 24 Ground: Hardcourt outdoor
| Challenger Lexington | 2019/07/29 23:00 | John McNally v Colin Sinclair | 7-6,3-6,6-1 |
| ITF M15 Alkmaar | 2019/06/28 11:00 | Niels Lootsma v Colin Sinclair | 6-1,6-1 |
| ITF M15 Alkmaar | 2019/06/27 12:25 | Luca Gelhardt v Colin Sinclair | 6-7,3-6 |
| ITF M15 Alkmaar | 2019/06/26 09:25 | Charles Broom v Colin Sinclair | 3-6,6-4,1-6 |
| ITF M25 Huelva | 2019/06/13 10:00 | Juan Pablo Varillas v Colin Sinclair | 6-0,6-4 |
| ITF M25 Huelva | 2019/06/11 18:00 | Nicolas Alvarez Varona v Colin Sinclair | 7-6,4-6,2-6 |
| ITF M25 Karlsruhe | 2019/06/07 15:55 | Colin Sinclair v Marvin Netuschil | 4-6,2-6 |
| ITF M25 Karlsruhe | 2019/06/05 11:10 | Adrian Oetzbach v Colin Sinclair | 6-3,3-6,4-6 |
| ITF M25 Ajaccio | 2019/07/13 19:35 | Quentin Robert v Agustin Velotti | 6-3,6-2 |
| ITF M25 Ajaccio | 2019/07/12 13:00 | Benjamin Lock v Agustin Velotti | 6-7,6-7 |
| ITF M25 Ajaccio | 2019/07/11 08:00 | Yannick Jankovits v Agustin Velotti | 3-6,4-6 |
| ITF M25 Ajaccio | 2019/07/09 18:35 | Agustin Velotti v Arthur Rinderknech | 6-4,7-5 |
| ITF M25 Hong Kong | 2019/06/16 02:00 | Agustin Velotti v Shintaro Imai | 6-3,6-3 |
| ITF M25 Hong Kong | 2019/06/15 03:00 | Agustin Velotti v Sidharth Rawat | 6-0,6-4 |
| ITF M25 Hong Kong | 2019/06/14 03:00 | Agustin Velotti v Yuki Mochizuki | 6-2,6-3 |
| ITF M25 Hong Kong | 2019/06/13 05:55 | Agustin Velotti v Scott Duncan | 7-5,6-4 |