Results
| Challenger Noumea | 12/31 06:25 | 25 | [415] Benoit Paire v Colin Sinclair [374] | 6-7,6-1,7-5 | |
| ITF M25 Carrara | 11/27 00:00 | 25 | Moerani Bouzige v Colin Sinclair | 6-4,6-7,6-3 | |
| Davis Cup | 11/23 07:30 | 2 | Alberto Lim v Colin Sinclair | 7-5,4-6,1-6 | |
| Davis Cup | 11/21 07:35 | 2 | Tenzin Singye Dorji v Colin Sinclair | 2-6,0-6 | |
| Davis Cup | 11/20 07:20 | 2 | Abdulla Faaih Fazeel v Colin Sinclair | 2-6,1-6 | |
| ITF M25 Brisbane | 11/14 01:45 | 26 |
Colin Sinclair v
Jason Kubler
|
4-6,4-6 | |
| ITF M25 Brisbane | 11/13 00:00 | 25 | [330] Emile Hudd v Colin Sinclair [419] | 5-7,6-7 | |
| Challenger Sydney | 10/27 00:40 | 45 |
Colin Sinclair v
Pavle Marinkov
|
6-3,1-6,2-6 | |
| Challenger Playford | 10/21 23:30 | 25 | [409] Masamichi Imamura v Colin Sinclair [383] | 7-6,6-3 | |
| Challenger Playford | 10/21 01:40 | 19 | [363] Colin Sinclair v Thomas Fancutt [134] | 7-6,6-3 | |
| Challenger Playford | 10/20 01:20 | 45 | Colin Sinclair v Charlie Camus | 6-4,6-1 | |
| ITF M25 Cairns | 10/11 01:00 | 27 |
[334] Colin Sinclair v
Blake Ellis
[368] 
|
5-7,5-7 |
Wikipedia - Colin Sinclair (tennis)
Colin Sinclair (born December 19, 1994) is an American tennis player representing the Northern Mariana Islands.
He achieved a career best singles ranking of world No. 340 on 18 September 2023, and a career high doubles ranking of world No. 200 on 10 April 2023. He has won 2 singles titles on the ITF Futures Tour. Additionally, he has won 2 titles on ATP Challenger Tour and 7 titles on the ITF Futures Tour in doubles.
He represents the Northern Mariana Islands in Davis Cup as part of the Pacific Oceania team since 2017 and has a career record of 18–5 (13–3 in singles, 5–2 in doubles) in the competition. He has been coached by Jeff Race, Ian Malpass, and Silviu Tanasoiu.