Stadium: Court 5 Round: 166 Ground: Hardcourt outdoor
| Challenger - Shenzhen | 2019/03/12 04:20 | Lopez Perez v Sinclair, Colin | 6-2,6-4 |
| Challenger - Shenzhen | 2019/03/11 02:00 | Sinclair, Colin v Zhou, Xinmu | 6-2,6-4 |
| ITF - M25 Mildura | 2019/03/06 23:00 | Rio Noguchi v Sinclair, Colin | 6-7,6-2,6-3 |
| ITF - M25 Mildura | 2019/03/05 23:00 | Alexander Klintcharov v Sinclair, Colin | 4-6,2-6 |
| Albury, Simples M-ITF-AUS-01A | 2019/02/27 02:15 | Sinclair, Colin v Issei Okamura | 6-7,6-2,4-6 |
| Tucson, Singles M-ITF-USA-07A | 2019/02/14 21:30 | Sinclair, Colin v Olivares, Jose | 3-6,6-7 |
| Tucson, Singles M-ITF-USA-07A | 2019/02/13 18:10 | Sinclair, Colin v Gamble, Luke Jacob | 7-6,6-0 |
| ITF M15 Claremont | 2019/02/11 18:00 | Sinclair, Colin v Lucas Poullain | 6-3,7-6 |
| ITF - M15 Sharm El Sheikh | 2019/02/24 08:00 | Bergevi, Filip v Fajing Sun | 7-6,7-6 |
| ITF - M15 Sharm El Sheikh | 2019/02/23 08:00 | Fajing Sun v Michael Geerts | 7-6,6-4 |
| ITF - M15 Sharm El Sheikh | 2019/02/22 12:00 | Fajing Sun v Giorgio Ricca | 7-6,4-6,6-4 |
| ITF - M15 Sharm El Sheikh | 2019/02/21 08:00 | Fajing Sun v Karl Friberg | 6-2,6-4 |
| ITF - M15 Sharm El Sheikh | 2019/02/20 10:15 | Fajing Sun v Frost, Linus | 6-4,7-5 |
| ITF - M15 Sharm El Sheikh | 2019/02/13 08:00 | Schmid, Aaron v Fajing Sun | 7-6,6-4 |
| Shenzhen II, Chine | 2018/10/28 04:00 | Goncalo Oliveira v Fajing Sun | 7-6,7-5 |
| Shenzhen II, Chine | 2018/10/27 07:35 | Balaji, N. Sriram v Fajing Sun | 3-6,4-6 |