Ku Yeon-woo
South Korean tennis player (born 2003)
From Wikipedia, the free encyclopedia
Ku Yeon-woo (born 15 March 2003) is a South Korean tennis player. She has a career-high singles ranking of world No. 172, achieved on 22 June 2026, and a best doubles ranking by the WTA of No. 372, reached on 6 October 2025.[1] She is the current No. 1 Korean singles player.
| Country (sports) |  South Korea |
|---|---|
| Born | 15 March 2003 |
| Plays | Right-handed |
| Prize money | $200,075 |
| Singles | |
| Career record | 231–124 |
| Career titles | 8 ITF |
| Highest ranking | No. 172 (22 June 2026) |
| Current ranking | No. 188 (20 July 2026) |
| Grand Slam singles results | |
| Australian Open | Q1 (2026) |
| French Open | Q1 (2026) |
| Wimbledon | Q1 (2026) |
| Doubles | |
| Career record | 79–53 |
| Career titles | 7 ITF |
| Highest ranking | No. 372 (6 October 2025) |
| Current ranking | No. 517 (29 June 2026) |
| Last updated on: 1 July 2026. | |
Career
Ku made her WTA Tour main-draw singles debut at the 2023 Korea Open as a qualifier, losing in the first round to Claire Liu.[2]
She received a wildcard entry into the main draw at the 2025 Korea Open, but again lost in the first round, this time to Loïs Boisson.[3]
ITF Circuit finals
Singles: 14 (8 titles, 6 runner-ups)
|
|
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
|---|---|---|---|---|---|---|---|
| Win | 1–0 | Aug 2019 | ITF Yeongwol, South Korea | W15 | Hard |  Watsachol Sawatdee |
3–6, 6–3, 6–2 |
| Win | 2–0 | Oct 2021 | ITF Sozopol, Bulgaria | W15 | Hard |  Julia Terziyska |
6–4, 6–2 |
| Win | 3–0 | Nov 2021 | ITF Lousada, Portugal | W15 | Hard (i) |  Živa Falkner |
6–0, 7–5 |
| Loss | 3–1 | Feb 2024 | ITF Gurugram, India | W35 | Hard |  Justina Mikulskytė |
0–6, 1–6 |
| Loss | 3–2 | Mar 2024 | ITF Nagpur, India | W35 | Clay | Dalila Jakupović |
1–6, 2–6 |
| Loss | 3–3 | Mar 2025 | ITF Kashiwa, Japan | W15 | Hard |  Ayano Shimizu |
3–6, 3–6 |
| Win | 4–3 | Jun 2025 | ITF Taipei, Taiwan | W35 | Hard | Rina Saigo |
6–1, 6–4 |
| Loss | 4–4 | Jul 2025 | ITF Monastir, Tunisia | W35 | Hard | Sakura Hosogi |
3–6, 3–6 |
| Win | 5–4 | Sep 2025 | ITF Nakhon Pathom, Thailand | W35 | Hard | Anchisa Chanta |
6–4, 2–0 ret. |
| Win | 6–4 | Oct 2025 | ITF Lagos, Portugal | W35 | Hard |  Carolyn Ansari |
6–2, 4–6, 7–6(5) |
| Win | 7–4 | Oct 2025 | ITF Loulé, Portugal | W35 | Hard | Hibah Shaikh |
7–6(6), 6–3 |
| Loss | 7–5 | Nov 2025 | Takasaki Open, Japan | W100 | Hard | Himeno Sakatsume |
3–6, 6–1, 4–6 |
| Loss | 7–6 | Nov 2025 | Keio Challenger, Japan | W50 | Hard |  Zhang Shuai |
3–6, 2–6 |
| Win | 8–6 | Jun 2026 | ITF Montemor-o-Novo, Portugal | W50 | Hard |  Francisca Jorge |
3–6, 6–4, 6–2 |
Doubles: 14 (7 titles, 7 runner-ups)
|
|
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|---|
| Loss | 0–1 | Mar 2021 | ITF Sharm El Sheikh, Egypt | W15 | Hard |  Raphaëlle Lacasse |
 Alicia Barnett Lily Miyazaki |
4–6, 1–6 |
| Win | 1–1 | Aug 2021 | ITF Bad Waltersdorf, Austria | W15 | Clay |  Priska Madelyn Nugroho |
 Giulia Crescenzi Arianna Zucchini |
6–4, 6–3 |
| Loss | 1–2 | Aug 2021 | ITF Aix-en-Provence, France | W15 | Clay |  Maria Bondarenko |
 Julie Belgraver Léa Tholey |
1–6, 2–6 |
| Win | 2–2 | Sep 2021 | ITF Melilla, Spain | W15 | Clay |  Caijsa Hennemann |
 Luisa Meyer auf der Heide Chantal Sauvant |
6–3, 6–0 |
| Win | 3–2 | Oct 2021 | ITF Seville, Spain | W25 | Clay | Caijsa Hennemann |
 Lina Gjorcheska  Tena Lukas |
7–5, 6–1 |
| Loss | 3–3 | Oct 2022 | ITF Quinta da Lago, Portugal | W25 | Clay |  Adrienn Nagy |
Francisca Jorge Matilde Jorge |
4–6, 4–6 |
| Win | 4–3 | May 2023 | ITF Incheon, South Korea | W25 | Hard | Choi Ji-hee |
 Li Yu-yun Tang Qianhui |
6–1, 6–1 |
| Loss | 4–4 | Jul 2023 | Open Castilla y León, Spain | W25 | Hard |  Diāna Marcinkēviča |
Rasheeda McAdoo  Alexandra Osborne |
4–6, 3–6 |
| Loss | 4–5 | Mar 2024 | ITF Nagpur, India | W35 | Clay | Justina Mikulskytė |
 Irina Bara Dalila Jakupović |
7–6(8), 6–7(5), [7–10] |
| Win | 5–5 | Mar 2025 | ITF Kashiwa, Japan | W15 | Hard | Naho Sato |
Eri Shimizu Kisa Yoshioka |
6–2, 6–4 |
| Loss | 5–6 | Apr 2025 | ITF Osaka, Japan | W35 | Hard | Janice Tjen |
Momoko Kobori Ayano Shimizu |
4–6, 5–7 |
| Loss | 5–7 | May 2025 | ITF Daegu, South Korea | W15 | Hard | Kim Da-bin |
Back Da-yeon Lee Eun-hye |
1–6, 1–6 |
| Win | 6–7 | Jun 2025 | ITF Taipei, Taiwan | W35 | Hard | Eri Shimizu |
Park So-hyun Ayano Shimizu |
6–4, 2–6, [10–5] |
| Win | 7–7 | Jul 2025 | ITF Monastir, Tunisia | W35 | Hard | Back Da-yeon |
Sakura Hosogi Misaki Matsuda |
6–3, 6–3 |
