Stadium: Stadium Round: 27
| ITF M15 Claremont | 2019/02/07 19:35 | Colin Sinclair v Tyler Lu | 6-3,6-3 |
| ITF M15 Claremont | 2019/02/06 20:45 | Colin Sinclair v Luke Jacob Gamble | 6-2,6-3 |
| 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 |
| ITF M15 Claremont | 2019/02/07 18:00 | Gage Brymer v George Goldhoff | 4-6,4-6 |
| ITF M15 Claremont | 2019/02/06 19:35 | George Goldhoff v Joao Pedro Sorgi | 6-4,6-4 |
| ITF M15 Claremont | 2019/02/05 20:30 | George Goldhoff v Grey Hamilton | 7-5,6-3 |
| ITF M15 Claremont | 2019/02/05 18:00 | Michael Shabaz v George Goldhoff | 3-6,3-6 |
| ITF M25 Los Angeles | 2019/01/03 20:10 | George Goldhoff v Martin Redlicki | 2-6,4-6 |
| ITF M25 Los Angeles | 2019/01/02 19:35 | George Goldhoff v Mohamed Aziz Dougaz | 7-6,4-6,7-6 |
| ITF M25 Los Angeles | 2019/01/01 20:20 | Axel Nefve v George Goldhoff | 7-5,4-6,6-10 |
| ITF M25 Los Angeles | 2018/12/31 18:00 | George Goldhoff v Lucas Renard | 6-3,7-5 |