| 戴维斯杯 | 07/20 05:30 | - | 科林•辛克莱 v 默罕穆德•阿利亚玛尼 | 6-1,5-0 | |
| 戴维斯杯 | 07/19 10:05 | 2 | Sharmal 迪萨纳亚克 v 科林•辛克莱 | 4-6,4-6 | |
| 戴维斯杯 | 07/17 07:20 | 1 | 卡里姆•阿尔阿拉夫 v 科林•辛克莱 | 4-6,0-6 | |
| ITF比利时F4资格赛 | 07/08 16:20 | 62 | 马克桑斯•布罗维尔 v 科林•辛克莱 | 6-4,6-2 | |
| ITF比利时F3 | 07/06 11:00 | 26 | 科林•辛克莱 v 亚丽克西斯∙穆斯勒卡 | 6-3,2-6,1-6 | |
| ITF比利时F3 | 07/04 14:35 | 25 | 西蒙•纳瓦罗 v 科林•辛克莱 | 6-7,7-6,2-6 | |
| ITF比利时F3资格赛 | 07/03 11:00 | 62 | 科林•辛克莱 v 特奥多 Giusca | 6-3,1-6,6-3 | |
| ITF比利时F3资格赛 | 07/02 08:00 | 62 | 康斯坦特•德拉巴瑟蒂埃 v 科林•辛克莱 | 4-6,2-6 | |
| ITF比利时F3资格赛 | 07/01 10:00 | 62 | 马克 S 梅耶尔 v 科林•辛克莱 | 0-6,1-6 | |
| ITF美国F20 | 06/22 00:55 | 25 | 朱利安 Zlobinsky v 科林•辛克莱 | 1-6,7-6,6-3 | |
| ITF美国F20 | 06/19 17:00 | 62 | 科林•辛克莱 v Alex Kobelt | 4-6,6-4,6-4 | |
| ITF美国F20 | 06/18 16:00 | 62 | 费利佩•拉米雷斯•卢纳 v 科林•辛克莱 | 5-7,2-6 | |
| ITF美国F18 | 06/14 17:50 | 25 | 科林•辛克莱 v 塞缪尔∙莫奈 | 6-4,4-6,2-6 | |
| ITF美国F18 | 06/12 16:00 | 62 | 科林•辛克莱 v 马克 Oljaca | 6-2,6-1 | |
| ITF美国F3 | 01/08 17:30 | 60 | 亚历山大•科瓦切维奇 v 科林•辛克莱 | 6-4,6-2 | |
| ITF美国F3 | 01/07 18:30 | 60 | 卡洛斯∙拉米瑞兹∙乌特曼 v 科林•辛克莱 | 3-6,6-4,4-6 | |
| ITF美国F20资格赛 | 06/29 17:30 | - | 迈凯尔•托皮加德 v 科林•辛克莱 | 6-2,6-2 | |
| ITF美国F18 | 06/22 16:00 | - | 多米尼克•科特罗内 v 科林•辛克莱 | 7-6,6-1 |
Colin Sinclair (born December 19, 1994) is a Northern Mariana Islander tennis player.
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 his country 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.