Stadium: Stadium Round: 25
| 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 M15 Claremont | 2019/02/05 20:30 | Luke Jacob Gamble v Tyler Mercier | 7-6,6-3 |
| ITF M15 Claremont | 2019/02/05 18:00 | Jacob Bullard v Luke Jacob Gamble | 3-6,2-6 |
| ITF South Africa F3 Qual | 2018/12/02 10:00 | Luke Jacob Gamble v Jody Alan Claassen | 3-6,5-7 |
| ITF South Africa F2 | 2018/11/26 10:00 | Luke Jacob Gamble v Riaan Du Toit | 6-0,6-7,2-6 |
| ITF South Africa F2 Qual | 2018/11/25 11:00 | Luke Jacob Gamble v Ashwin R Sharma | 6-2,6-3 |
| ITF South Africa F1 | 2018/11/20 15:30 | Samm Butler v Luke Jacob Gamble | 6-2,6-4 |
| ITF South Africa F1 | 2018/11/19 07:00 | William Bushamuka v Luke Jacob Gamble | 2-6,3-6 |
| ITF South Africa F1 Qual | 2018/11/18 09:00 | Ethan Terblanche v Luke Jacob Gamble | 1-6,0-6 |