Colin Sinclair| Country (sports) | Northern Mariana Islands (2018–)
United States (2013–2017)
Australia (–2013) Pacific Oceania (Davis Cup tournaments) |
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| Residence | Brisbane, Australia |
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| Born | (1994-12-19) 19 December 1994
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| Height | 6 ft 2 in (1.88 m) |
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| Plays | Right-handed (two-handed backhand) |
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| College | Cornell University |
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| Coach | Jeff Race, Ian Malpass, Silviu Tanasoiu |
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| Prize money | US $172,678 |
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|
| Career record | 1-2 |
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| Career titles | 0 |
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| Highest ranking | No. 340 (18 September 2023) |
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| Current ranking | No. 509 (10 August 2026) |
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|
| Career record | 1-1 |
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| Career titles | 0 |
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| Highest ranking | No. 200 (10 April 2023) |
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| Current ranking | No. 494 (10 August 2026) |
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| Davis Cup | 18–5 |
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| Last updated on: 21 August 2026. |
Colin Sinclair (born December 19, 1994) is an American tennis player representing the Northern Mariana Islands.[1][2]
He achieved a career best singles ranking of world No. 340 on 18 September 2023 and a doubles ranking of No. 200 on 10 April 2023.[1]
Sinclair has won four ATP Challenger and eight ITF Tour doubles titles. Additionally, he has won three singles ITF titles.[3]
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.[4]
ATP Challenger and ITF Tour finals
Singles: 15 (5–10)
| Legend |
| ATP Challenger Tour (0–0) |
| ITF Futures/World Tennis Tour (5–10) |
|
| Finals by surface |
| Hard (2–7) |
| Clay (2–2) |
| Grass (1–1) |
|
| Result |
W–L |
Date |
Tournament |
Tier |
Surface |
Opponent |
Score |
| Loss |
0–1 |
Aug 2018 |
Belgium F9, Huy |
Futures |
Clay |
Jan Choinski |
6–3, 6–7(0–7), 3–6 |
| Loss |
0–2 |
Sep 2018 |
Belgium F10, Damme |
Futures |
Clay |
Michael Geerts |
3–6, 3–6 |
| Loss |
0–3 |
Sep 2018 |
Tunisia F31, Monastir |
Futures |
Hard |
Gabriel Petit |
6–7(5–7), 6–7(4–7) |
| Loss |
0–4 |
Oct 2018 |
Australia F7, Brisbane |
Futures |
Hard |
Evan Hoyt |
4–6, 6–7(5–7) |
| Loss |
0–5 |
Oct 2018 |
Australia F8, Toowoomba |
Futures |
Hard |
Maverick Banes |
4–6, 2–6 |
| Win |
1–5 |
Feb 2019 |
M15 Claremont, United States |
World Tennis Tour |
Hard |
Lucas Poullain |
6–3, 7–6(7–3) |
| Loss |
1–6 |
Nov 2019 |
M15 Cancún, Mexico |
World Tennis Tour |
Hard |
João Lucas Reis da Silva |
2–6, 4–6 |
| Win |
2–6 |
Nov 2021 |
M15 Guatemala City, Guatemala |
World Tennis Tour |
Hard |
Marco Brugnerotto |
6–1, 5–7, 6–4 |
| Loss |
2–7 |
May 2022 |
M15 Cairo, Egypt |
World Tennis Tour |
Clay |
Li Tu |
4–6, 6–3, 3–6 |
| Loss |
2–8 |
Oct 2022 |
M25 Cairns, Australia |
World Tennis Tour |
Hard |
Alex Bolt |
3–6, 2–6 |
| Win |
3–8 |
Jun 2023 |
M15 Rancho Santa Fe, USA |
World Tennis Tour |
Hard |
Jaimee Floyd Angele |
6–3, 6–2 |
| Loss |
3–9 |
Sep 2024 |
M15 Hong Kong, Hong Kong |
World Tennis Tour |
Hard |
Chris Rodesch |
4–6, 6–7(3–7) |
| Win |
4–9 |
Mar 2026 |
M15 Wodonga, Australia |
World Tennis Tour |
Grass |
Cruz Hewitt |
6–3, 6–2 |
| Loss |
4–10 |
Mar 2026 |
M15 Swan Hill, Australia |
World Tennis Tour |
Grass |
Pavle Marinkov |
6–7(2–7), 2–6 |
| Win |
5–10 |
Apr 2026 |
M25 Anning, China |
World Tennis Tour |
Clay |
Filip Peliwo |
6–3, 6–0 |
Doubles: 19 (12–7)
| Legend |
| ATP Challenger Tour (4–0) |
| ITF Tour (8–7) |
|
| Finals by surface |
| Hard (7–3) |
| Clay (5–4) |
| Grass (0–0) |
|
| Result |
W–L |
Date |
Tournament |
Tier |
Surface |
Partner |
Opponents |
Score |
| Win |
1–0 |
Aug 2017 |
Belgium F8, Eupen |
Futures |
Clay |
Charles Broom |
Tom Schonenberg
Colin Van Beem |
4–6, 6–1, [10–5] |
| Loss |
1–1 |
Aug 2018 |
Belgium F9, Huy |
Futures |
Clay |
Luke Jacob Gamble |
Dan Added
Romain Barbosa |
4–6, 5–7 |
| Loss |
1–2 |
Mar 2021 |
M15 Monastir, Tunisia |
World Tennis Tour |
Hard |
Vladislav Melnic |
Samuele Pieri
Daniele Capecchi |
7–6(8–6), 4–6, [4–10] |
| Win |
2–2 |
Mar 2021 |
M15 Monastir, Tunisia |
World Tennis Tour |
Hard |
Vladislav Melnic |
Kazuma Kawachi
Evan Zhu |
6–3, 4–6, [10–6] |
| Loss |
2–3 |
Sep 2021 |
M25 Říčany, Czech Republic |
World Tennis Tour |
Clay |
Alexander Donski |
Toby Alex Kodat
Adam Pavlásek |
3–6, 5–7 |
| Loss |
2–4 |
Sep 2021 |
M25 Eupen, Belgium |
World Tennis Tour |
Clay |
Benjamin Dhoe |
Niklas Schell
Kai Wehnelt |
6–7(3–7), 3–6 |
| Loss |
2–5 |
Oct 2021 |
M15 Tallahassee, United States |
World Tennis Tour |
Hard |
Thomas Fancutt |
Liam Draxl
John McNally |
2–6, 3–6 |
| Loss |
2–6 |
Feb 2022 |
M15 Oberhaching, Germany |
World Tennis Tour |
Hard |
Edan Leshem |
Petr Nouza
Giovanni Oradini |
6–3, 3–6, [11–13] |
| Loss |
2–7 |
Apr 2022 |
M15 Cairo, Egypt |
World Tennis Tour |
Clay |
Francis Casey Alcantara |
Lorenzo Joaquin Rodriguez
Ilya Rudiukov |
5–7, 4–6 |
| Win |
3–7 |
May 2022 |
M25 Cairo, Egypt |
World Tennis Tour |
Clay |
Francis Casey Alcantara |
Denis Klok
Ilya Rudiukov |
6–3, 6–3 |
| Win |
4–7 |
May 2022 |
M15 Cairo, Egypt |
World Tennis Tour |
Clay |
Tristan Schoolkate |
David Pichler
Volodymyr Uzhylovskyi |
6–1, 7–5 |
| Win |
5–7 |
Sep 2022 |
M25 Darwin, Australia |
World Tennis Tour |
Hard |
Kyle Seelig |
Tai Sach
Zaharije-Zak Talic |
6–4, 6–4 |
| Win |
6–7 |
Oct 2022 |
M25 Cairns, Australia |
World Tennis Tour |
Hard |
Kyle Seelig |
James McCabe
Adam Walton |
6–4, 6–2 |
| Win |
7–7 |
Jan 2023 |
Nouméa, New Caledonia |
Challenger |
Hard |
Rubin Statham |
Toshihide Matsui
Kaito Uesugi |
6–4, 6–3 |
| Win |
9–7 |
Mar 2023 |
M25 Canberra, Australia |
World Tennis Tour |
Clay |
Zaharije-Zak Talic |
Blake Bayldon
Jordan Smith |
7–5, 6–3 |
| Win |
9–7 |
Apr 2023 |
San Luis Potosí, Mexico |
Challenger |
Clay |
Adam Walton |
Benjamin Lock
Rubin Statham |
5–7, 6–3, [10–5] |
| Win |
10–7 |
Jan 2024 |
Nouméa (2) |
Challenger |
Hard |
Rubin Statham |
Toshihide Matsui
Calum Puttergill |
7–5, 6–2 |
| Win |
11–7 |
Nov 2024 |
M25 Brisbane, Australia |
World Tennis Tour |
Hard |
Brandon Walkin |
Joshua Charlton
Emile Hudd |
7–6(7–3), 6–3 |
| Win |
12–7 |
Jan 2025 |
Nouméa (3) |
Challenger |
Hard |
Blake Bayldon |
Ryuki Matsuda Ryotaro Taguchi |
6–3, 7–5 |