Estadio: Court 6 Round: 25 Ground: Clay
| ITF M15 Praga | 2019/05/14 08:00 | Tadeas Paroulek v Colin Sinclair | 6-3,6-2 |
| ITF M15 Troisdorf | 2019/05/07 11:25 | Mick Veldheer v Colin Sinclair | 6-7,6-3,6-2 |
| Challenger de Zhangjiagang | 2019/03/18 02:00 | Colin Sinclair v Fajing Sun | 4-6,2-6 |
| Challenger de Shenzhen | 2019/03/12 04:20 | Enrique Lopez-Perez v Colin Sinclair | 6-2,6-4 |
| Challenger de Shenzhen | 2019/03/11 02:00 | Colin Sinclair v Xinmu Zhou | 6-2,6-4 |
| ITF M25 Mildura | 2019/03/06 23:00 | Rio Noguchi v Colin Sinclair | 6-7,6-2,6-3 |
| ITF M25 Mildura | 2019/03/05 23:00 | Alexander Klintcharov v Colin Sinclair | 4-6,2-6 |
| ITF M25 Albury | 2019/02/27 02:15 | Colin Sinclair v Issei Okamura | 6-7,6-2,4-6 |
| ITF M15 Troisdorf | 2019/05/09 12:45 | Marvin Netuschil v Jeroen Vanneste | 6-7,3-6 |
| ITF M15 Troisdorf | 2019/05/09 08:00 | Marvin Netuschil v Johan Nikles | 7-6,7-6 |
| ITF M15 Troisdorf | 2019/05/07 09:30 | Marvin Netuschil v Dane Sweeny | 6-0,6-1 |
| ITF M15 Madrid | 2019/04/19 13:00 | Johan Nikles v Marvin Netuschil | 6-2,4-6,7-6 |
| ITF M15 Madrid | 2019/04/17 09:30 | Francisco Cabral v Marvin Netuschil | 2-6,6-7 |
| ITF 15 Antalya | 2019/03/31 07:30 | Vaclav Safranek v Marvin Netuschil | 4-6,6-1,6-2 |
| ITF 15 Antalya | 2019/03/30 11:00 | Felipe Meligeni Rodrigues Alves v Marvin Netuschil | 1-6,4-6 |
| ITF 15 Antalya | 2019/03/29 12:30 | Dimitriy Voronin v Marvin Netuschil | 4-6,6-3,2-6 |