Stadium: Court 6 Round: 25 Ground: Clay
| Challenger Canberra | 2019/01/06 23:00 | Sadio Doumbia v Colin Sinclair | 6-3,6-4 |
| Challenger Noumea | 2019/01/03 07:00 | Colin Sinclair v Mikael Ymer | 3-6,2-6 |
| Challenger Noumea | 2019/01/01 23:00 | Blaz Rola v Colin Sinclair | 5-7,4-6 |
| Challenger Noumea | 2018/12/31 01:15 | Maxime Chazal v Colin Sinclair | 4-6,4-6 |
| Australian Open WC | 2018/11/30 02:00 | Colin Sinclair v Ze Zhang | 1-6,1-6 |
| Australian Open WC | 2018/11/28 03:25 | Di Wu v Colin Sinclair | 2-6,3-6 |
| Challenger Kobe | 2018/11/14 02:00 | Aleksandar Vukic v Colin Sinclair | 6-1,6-1 |
| Challenger Kobe | 2018/11/12 02:00 | Blake Ellis v Colin Sinclair | 4-6,4-6 |
| ITF M25 Nussloch | 2019/01/22 18:50 | Dominik Boehler v Marvin Netuschil | 6-4,6-3 |
| ITF Spain F27 | 2018/09/12 16:30 | Pol Toledo Bague v Marvin Netuschil | 6-4,7-6 |
| ITF Spain F27 | 2018/09/11 16:30 | Benjamin Pietri v Marvin Netuschil | 4-6,2-6 |
| ITF Switzerland F5 | 2018/09/06 12:55 | Louis Wessels v Marvin Netuschil | 3-6,6-1,6-4 |
| ITF Switzerland F5 | 2018/09/05 10:00 | Adrian Obert v Marvin Netuschil | 6-7,3-6 |
| ITF Switzerland F5 | 2018/09/04 09:30 | Patrik Hartmeier v Marvin Netuschil | 1-6,0-6 |
| Challenger Scheveningen | 2018/07/19 12:10 | Yannick Maden v Marvin Netuschil | 6-3,6-1 |
| Challenger Scheveningen | 2018/07/17 09:00 | Tim Van Rijthoven v Marvin Netuschil | 3-6,3-6 |